四川省成都七中2014届高三(下)第一次周练化学试卷(4月份)

成都七中高2014级零诊模拟考试题化学第I卷（选择题共40分）可能用到的相对原子质量：H—1 C—12 N—14 O—16 S—32 Na—23 Mg—24 Al—27 Si—28 Fe—56 Zn—65选择题（共20个小题，每小题2分，每小题只有一个正确选项）1．下列化学用语表示正确的是（）A．C2 H4分子比例模型：B．N2的结构式：:N≡N:C．基态氮原子L层电子的轨道表示式：D．基态溴原子的核外电子排布式：4s24p52．下列说法正确的是（）A．葡萄糖注射液不能产生丁达尔现象，不属于胶体B．MgSO4晶体中只存在离子键C．玻璃是氧化物，成分可表示为Na2O·CaO·6SiO2D．1mol/L的氨水与等质量的水混合后（忽略体积变化），所得溶液浓度小于0.5mol/L 3．下列叙述正确的是（）A．SiO2晶体网状结构中，最小的环上，Si和O原子数之比为1︰2B．第三周期元素的最高正化合价等于它所处的主族序数C．SO2、SO3都是极性分子D．同主族元素形成的氧化物的晶体类型均相同4．下列叙述错误的是（）A．合金材料中可能含有非金属元素B．人造纤维，合成纤维和光导纤维都是有机高分子化合物C．用加酶洗衣粉在温水中不能洗涤毛料服装D．合成橡胶是以石油、天然气为原料，以二烯烃和烯烃为单体聚合而成的高分子5．将足量HCl通入下列各溶液中，所含离子还能大量共存的是（）A．K＋、SiO32－、Cl－、NO3－B．H＋、NH4+、Al3＋、SO42一C．Na＋、MnO4－、AlO2－、、SO42－D．Na＋、C6H5O－、CH3COO－、HCO3－6．在含有大量PbI2的饱和溶液中存在着平衡PbI2(s) Pb2＋(aq)＋2I－(aq)，加入KI溶液，下列说法正确的是（）A．溶液中Pb2＋和I－浓度都增大B．溶度积常数K sp增大C．沉淀溶解平衡向右移动D．溶液中Pb2＋浓度减小7．下列说法正确的是（）A．离子晶体的晶格能：MgO> KCl> NaCl B．蔗糖在人体内水解的产物只有葡萄糖C．对于反应2H2O2=2H2O+O2↑，加入MnO2或升高温度都能加快O2的生成速率D．对羟基苯甲醛的沸点大于邻羟基苯甲醛，原因是后者分子之间存在氢键8．下列有关方程式书写正确的是（）A．NaHCO3的电离：NaHCO3Na++H++CO32－B．HS－的水解：HS－+H2O H3O++S2－C．氢氧燃料电池在碱性介质中的负极反应式：O2+2H2O+4e－=4OH－D．用饱和Na2CO3溶液处理重晶石：BaSO4+CO32－BaCO3+ SO42－9．下列表示对应化学反应的离子方程式正确的是（）A．Fe3O4与稀硝酸反应：Fe3O4 +8 H+ 2Fe3+十Fe2++4 H2OB．向NH4HCO3溶液中加过量NaOH溶液并加热：NH4＋＋OH－NH3↑＋H2OC．将过量二氧化硫气体通入冷氨水中：SO2＋NH3·H2O=HSO3－＋NH4＋D．用稀硝酸洗涤试管内壁的银镜：Ag＋2H＋＋3NO3－=Ag＋＋NO↑＋H2O10．顺铂[Pt(NH3)2Cl2]是1969年发现的第一种具有抗癌活性的金属配合物；碳铂是1，1-环丁二羧酸二氨合铂Ⅱ的简称，属于第二代铂族抗癌药物，其毒副作用低于顺铂。

四川省成都七中高2014级2011—2012学年度春季入学考试化学试卷考试时间：90分钟总分：100分可能用到的相对原子质量：N—14 O—16 C—12 H—1 Na—23 Cu—64 S—32 Fe—56注意：选择题答案用2B铅笔涂在机读卡上，考试结束后请交机读卡和第Ⅱ卷。

第Ⅰ卷选择题(共51分)每题只有一个选项正确，每题3分，共17题：1.如果你在厨房不小心将花生油与凉开水混在一起，你将采用下列何种方法进行分离( )A.过滤B.蒸馏C.分液D.萃取2. 下列类型的反应，一定发生电子转移的是（）A.分解反应B.离子反应C.置换反应D.复分解反应3. 设N A为阿伏加德罗常数的数值，下列说法正确的是()A.常温下，23 g NO2含有N A个氧原子B.1 L 0.1 mol·L－1氨水含有0.1 N A个OH－C.常温常压下，22.4 L CCl4含有N A个CCl4分子D.1 mol Fe2＋与足量的H2O2溶液反应，转移2N A个电子4.下列关于溶液和胶体的叙述，正确的是()A.溶液是电中性的，胶体是带电的B.通电时，溶液中的溶质粒子分别向两极移动，胶体中的分散质粒子向某一极移动C.溶液中溶质分子的运动有规律，胶体中分散质粒子的运动无规律，即布朗运动D.一束光线分别通过溶液和胶体时，后者会出现明显的光带，前者则没有5.6.除去下列物质中少量杂质的方法正确的是()A.除去CO2中混有的HCl：用饱和碳酸钠溶液洗气B.除去NO2中混有的NO：用水洗气C.除去FeCl2溶液中混有的FeCl3：加入过量铁粉，过滤D.除去Cu粉中混有的CuO：加适量稀硝酸后，过滤、洗涤7.同温同压下，质量忽略不计的两气球A和B，分别充入X气体和Y气体，且充气后两气球的体积相同．若相同条件下，A气球放在CO中静止不动，B气球放在O2中上浮．下列叙述或表示正确的是()A.X气体的相对分子质量比Y气体的相对分子质量大B.X可能是N2，Y可能是CH4C.X气体的密度小于Y气体的密度D.充气后A气球质量比B气球质量大8.如下图所示，纵坐标表示导电能力，横坐标表示所加溶液的量，以下各组反应，符合该图的是（）A.Ba(OH)2溶液中滴加稀H2SO4B.NaOH溶液中滴加稀HClC.CH3COOH溶液中滴加KOH溶液D.Cu(OH)2悬浊液中滴加HNO3溶液9.下列各组离子，在溶液中能大量共存、加入NaOH溶液后加热既有气体放出又有沉淀生成的一组是（）A. H+、NH4+、Fe2+、NO3-B.H＋、K＋、SiO2－3、NO－3C. K＋、Ba2+、HCO－3、Cl-D. Mg2+、NH4+、SO42-、K+10.铁、稀盐酸、澄清石灰水、氯化铜溶液是中学化学中常见物质，四种物质间的反应关系如下图所示。

四川成都七中2018 届高三第一次诊疗性检测模拟化学试卷本试卷分为第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分，第Ⅰ卷1-5 页，第Ⅱ卷6-13 页。

全卷共 300 分，考试时间150 分钟第Ⅰ卷（选择题，共126 分）注意事项：1．答第Ⅰ卷前，考生务势必自己的姓名、考号、考试科目用铅笔填写在答题卡上．2．第Ⅰ卷每题选出答案后，用铅笔把答题卡上对应题目的答案标号涂黑，如需变动，用橡皮擦干净后，在选涂其余答案，不可以答在试卷上．3．考试结束，监考人员只将第Ⅱ卷和答题卡一并回收．相对原子质量：本卷有两大题，共21 小题，每题 6 分。

一．选择题（此题包含13 小题，每题 6 分，每题只有一个选项切合题意）．．．．6．设 N A表示阿佛加德罗常数，以下说法正确的选项是A ．标准状况下，22.4 L 甲醛所含电子数约为16 N AB． 25℃时， pH=13 的 1 L Ca(OH) 2溶液中含有 OH -数量约为 0.2 N AC． 0.5 mol NH 4HSO 4晶体中，含有 H +数量约为 0.5 N AD．常温常压下， 4.6 g NO 2气体含有0.1 N A个分子7．以下表达错误的是．．A ．纤维素的水解实验操作为：把一小团棉花放入试管中，加入几滴90%的硫酸溶液，用玻璃棒把棉花捣成糊状，小火微热，至成亮棕色溶液B．向油脂发生皂化反响后所得的混淆溶液中加入固体NaCl 会出现分层现象，此过程发生的主假如物理变化C．当镀锌铁制品的镀层损坏时，镀层还能对铁制品起保护作用D．已知苯与苯酚的沸点差别较大，故可用蒸馏的方法分别苯与苯酚的混淆液8．以下离子方程式或化学方程式书写正确的选项是电解A ． 2AlCl 3(熔融 )====2Al + 3Cl 2↑电解B．电解 CuCl 2溶液： 2Cu2+ + 2H 2O === 2Cu + 4H + + O2↑△C．硫酸氢铵溶液与足量烧碱稀溶液共热：NH 4+ + H ++ 2OH -= NH 3↑+ 2H2OD．氯化铁溶液中通入足量H 2S 气体： 2Fe3+ + 3H 2S = 2FeS↓ + S↓ + 6H +9．食品香精菠萝酯的生产路线（反响条件略去）以下：以下表达错误的是．．A ．步骤（ 1）和步骤（ 2）均发生的是代替反响B．生产路线中的五种有机物均可与NaOH 溶液发生反响C．苯酚、苯氧乙酸和菠萝酯均可与溴在必定条件下发生代替反响D．苯氧乙酸的同分异构体中，苯环有两个侧链且属于有机羧酸酯类的同分异构体有15 种10．在 25℃、 101 kPa 下，白磷（化学式为P4）、红磷（化学式为P）焚烧的热化学方程式分别为：P4(s) +5O 2(g) =P 4O10(s)；H =－ 3093.2kJ mol·-14P(s) +5O 2(g) =P 4O10(s)； H =－ 2954.0kJ mol·-1由此判断以下说法正确的选项是 A ．红磷的焚烧热为 2954.0 kJ mol·-1B．已知白磷分子为正四周体构造，则P-P 键之间的夹角为109 ° 28′C．由红磷转变为白磷是吸热反响，等质量时白磷能量比红磷高D．等质量的白磷和红磷在同样条件下分别与足量氯气反响，设产物只有PCl 5，则红磷放出的热量更多11．盐酸、醋酸、碳酸钠和碳酸氢钠是生活中常有的物质，以下表述正确的选项是A ．在 Na2CO3溶液中加入与其溶质等物质的量的冰醋酸，溶液中存在：+-2c(Na ) = c(CH 3COOH) + c(CH 3COO )+ c(CO 3 )+c(HCO 3 ) + c(H 2CO3)-B． NaHCO 3溶液中存在： c(H + )+c(H 2CO3)=c(OH )C ． 10 mL1.0mol ·L - 10.01mol 的 NaOH后，溶液中离子浓度的大小关系为：CH 3COOH 溶液中加入+--+c(Na )=c(CH 3COO )＞ c(OH )=c(H )D．同样条件下，中和体积与pH 都同样的HCl 溶液和 CH 3COOH 溶液所耗费的NaOH 物质的量前者大12．将 2 molX 和 2 mol Y 充入 2 L 密闭容器中发生以下反响：X(g)+3Y(g) 2Z(g)+ aQ(g) ；H =b kJ/mol 。

成都七中2014届理综训练一化学试题可能用到的相对原子质量：H-1 N-14 O-16 Cl-35. 5 Ca-40一、单选题1、下列有关环境、健康及能源的叙述中，不正确的是A．氮的氧化物是光化学烟雾的主要污染物，二氧化碳是温室效应的主要污染物，所以他们的含量是空气质量报告的主要项目B．严格讲，“通风橱”是一种不负责任的防污染手段，因为实验产生的有害气体没有得到转化或吸收C．用二氧化硫、亚硝酸钠、苏丹红等化学药品“美化”后的食物“味美、色艳”，但添加剂超标，对人体危害极大D．开发利用新能源，合理利用工业生产的废热，是缓解能源危机的重要途径2．常温，下列各组离子在指定溶液中一定能大量共存的是A．0.1 mol·L－1 FeCl3溶液：K＋、NH4＋、I－、SCN－B．c(H＋)/c(O H－)＝1×1014的溶液：Ca2＋、Na＋、NH4＋、NO3－C．c(NaNO3)＝1.0mol·L—1溶液：H+、K+、Cl－、SO32－D．c(H＋)+c(O H－)＝2.0×10―7mol·L―1溶液中：HCO3－、Na+、AlO2－、SO42－3、下列相关反应的离子方程式书写错误．．的是（）A．氯化亚铁溶液与过氧化钠以物质的量2: 1反应：6Fe2++3Na2O2+6H2O=4Fe(OH)3↓+6Na++2Fe3+ B．等体积、等物质的量浓度的Ca(HCO3)2溶液和NaOH溶液混合：Ca2++HCO3－+OH－=CaCO3↓+H2OC．用稀硫酸酸化的KMnO4溶液与少量H2O2反应：2MnO4—+6H++5H2O2＝2Mn2++5O2↑+8H2O D．SO2通入NaClO溶液中：SO2+ClO—+OH—＝SO42—+Cl—+H+4．下列实验现象预测正确的是A．实验I：振荡后静置，上层溶液颜色保持不变B．实验II：酸性KMnO4溶液中出现气泡，且颜色不变C．实验III：微热稀HNO3片刻，溶液中有气泡产生，广口瓶内始终保持无色D．实验IV：继续煮沸溶液至红褐色，停止加热，当光束通过体系时可产生丁达尔效应5.已知下列反应的热化学方程式：6C(s)+5H2(g)+3N2(g)+9O2(g)=2C3H5(ONO2)3(l) △H12 H2(g)+ O2(g)= 2H2O(g) △H2C(s)+ O2(g)=CO2(g) △H3则反应4C3H5(ONO2)3(l)= 12CO2(g)+10H2O(g) + O2(g) +6N2(g)的△H为A．12△H3+5△H2-2△H1B．2△H1-5△H2-12△H3C．12△H3-5△H2-2△H1D．△H1-5△H2-12△H36．一定条件下铁和CO2发生反应：Fe(s)＋CO2(g)FeO(s)＋CO(g) △H＞0，1100℃时，向某恒容密闭容器中加入足量铁粉并充入一定量的CO2气体，反应过程中CO2和CO的浓度与时间的关系如图所示。

2014-2015学年四川省成都七中高二（下）第一周周练化学试卷（4月份）一、选择题（共5小题，每小题3分，满分12分）1．（3分）常温时，1mol/L的CH3COOH溶液和0.1mol/L的CH3COOH溶液，其[H+]之比2．（3分）化合物HIn在水溶液中存在以下电离平衡：HIn（溶液）⇌H+（溶液）+In﹣（溶液）红色黄色故可用于作酸碱指示剂，现有浓度均为0.02mol/L的下列溶液①盐酸②石灰水③NaCl溶液④NaHSO4溶液⑤NaHCO3溶液⑥氨水3．（3分）石灰乳悬浊液中存在下列平衡向Ca（OH）2（固）⇌Ca2++2OH﹣一定量的此悬浊4．（3分）相同浓度的一元强酸X溶液和一元弱酸Y溶液各10mL分别与足量金属镁反应．下5．相同浓度的一元强酸X溶液和一元弱酸Y溶液各10mL分别与足量金属镁反应．下列叙二、解答题（共1小题，满分0分）6．在室温下，冰醋酸加水稀释过程中，溶液导电能力I随加入水量（V表示体积）的变化曲线如图所示，请回答：（1）“Q”点导电能力最差的原因是；（2）a、b、c三点处，溶液中C（H+）由小到大的顺序是，电离程度由小到大的顺序是；（3）若要使C点处溶液中C（CH3COO﹣）增大，C（H+）减小，可采取的措施是：．2014-2015学年四川省成都七中高二（下）第一周周练化学试卷（4月份）参考答案与试题解析一、选择题（共5小题，每小题3分，满分12分）1．（3分）常温时，1mol/L的CH3COOH溶液和0.1mol/L的CH3COOH溶液，其[H+]之比）的．度变为原来浓度的2．（3分）化合物HIn在水溶液中存在以下电离平衡：HIn（溶液）⇌H+（溶液）+In﹣（溶液）红色黄色故可用于作酸碱指示剂，现有浓度均为0.02mol/L的下列溶液①盐酸②石灰水③NaCl溶液④NaHSO4溶液⑤NaHCO3溶液⑥氨水3．（3分）石灰乳悬浊液中存在下列平衡向Ca（OH）2（固）⇌Ca2++2OH﹣一定量的此悬浊液中加入少量生石灰，维持温度不变，下列说法中正确的是（）4．（3分）相同浓度的一元强酸X溶液和一元弱酸Y溶液各10mL分别与足量金属镁反应．下5．相同浓度的一元强酸X溶液和一元弱酸Y溶液各10mL分别与足量金属镁反应．下列叙二、解答题（共1小题，满分0分）6．在室温下，冰醋酸加水稀释过程中，溶液导电能力I随加入水量（V表示体积）的变化曲线如图所示，请回答：（1）“Q”点导电能力最差的原因是因为冰醋酸未电离，无自由移动的离子；（2）a、b、c三点处，溶液中C（H+）由小到大的顺序是c＜a＜b，电离程度由小到大的顺序是a＜b＜c；（3）若要使C点处溶液中C（CH3COO﹣）增大，C（H+）减小，可采取的措施是：加入固体碱，醋酸盐固体，活泼金属、金属氧化物、碳酸盐等．。

成都七中高2014届第4次高考模拟考试第Ⅰ卷(选择题, 共90分)Ⅰ. 单项填空(共10小题; 每小题1分, 满分10分)1. Alfonso Cuarón, director and co-writer of Gravity, makes it big success at the 86th.Oscar Academy Awards.A. a; theB. the; theC. the; aD. a; a2. It‟s good for a university student to take up a job if he can get.A. itB. oneC. someD. that3.With the word “PM2.5” constantly in media reports, you might be wondering what on earth it means.A. appearedB. appearingC. to appearD. being appeared4.Naturally a smile the eyes participate is extremely communicative.A. in whichB. to whichC. at whichD. with which5.With the rise of modern communication tools, handwritten letters by emails.A. will replaceB. have replacedC. are replacedD. are being replaced6.H7N9 is a deadly virus, it is still safe to eat thoroughly-cooked chicken according to some experts.A. UntilB. WhileC. IfD. Since7.I wondered they had raised so much money on their own to help youngsters in need.A. whatB. thatC. howD. why8. It is reported that Alain Perrin to serve as the new coach of National Football Team of China after Asian Cup Qualifiers.A. schedulesB. is scheduledC. had scheduledD. had been scheduled9.the picture of the popular singer, I would show it to you right now.A. Had I takenB. Did I takeC. I had takenD. I took10. —Do you think their table tennis team will win the first place at the coming Asian Games?—. Ours is much stronger than theirs.A. Of courseB. It dependsC. Don‟t mention itD. By no meansⅡ. 完形填空(共20小题; 每小题1. 5分, 满分30分)“Meow, meow, meow,” is what I heard as I walked through the alley. I approached the noise and noticed a tail sticking out from under a piece of wood. Under the wood was a 11 black and white cat. I picked him up and 12 he must be freezing to death. I 13 home with the cat held in my jacket.My new best friend, who soon became known as Little Bit, received his name because he was almost 14 when I held him in my hands. He stood about five inches tall. Little Bit‟s small size had a great advantage — he 15 perfectly in the pocket of my jacket, which made 16 him everywhere very easy. Any time I was home, he wouldn‟t leave my 17 . He was always eager toplay with me. When I fell asleep at night, he would always 18 up around my head to ensure that I was warm.Unfortunately, I grew up. My teenage life 19 my relationship with Little Bit. I lived at such a fast pace that I stopped 20 time for him. My free time was spent with my friends instead. I would come in the house on my phone and not 21 him at all. His meows became an annoyance to me, but it wasn‟t his 22 that he wanted his best friend back.Time had caused a 23 to Little Bit. His body began 24 down and by the time I realized something was wrong with him, he had already lost his balance. He lay there and looked at me, and 25 this day I still remember the 26 look in his bright green eyes. I took him to the vet (兽医), but there was nothing he could do. The last time I 27 him he wasn‟t the same tiny cat I had found ten years before. Little Bit filled my arms and he was put to sleep that day.Little Bit‟s 28 made me realize how much he meant to me. He was always there for me when I needed him. I 29 our last years together and I feel sorry for not always being there for him. I will always 30 the special memories we made.11. A. lovely B. tiny C. pretty D. friendly12. A. agreed B. insisted C. realized D. proved13. A. left B. stayed C. drove D. hurried14. A. weightless B. useless C. breathless D. hopeless15. A. grew B. fitted C. played D. existed16. A. showing B. keeping C. taking D. guiding17. A. mind B. heart C. body D. side18. A. rise B. stand C. wake D. roll19. A. weakened B. fastened C. deepened D. sharpened20. A. making B. losing C. wasting D. gaining21. A. overlook B. interrupt C. acknowledge D. recognize22. A. desire B. purpose C. fault D. greed23. A. fear B. loss C. delay D. concern24. A. dropping B. tearing C. calming D. shutting25. A. on B. to C. in D. for26. A. shameful B. hateful C. harmful D. sorrowful27. A. helped B. protected C. held D. cured28. A. illness B. death C. sadness D. pressure29. A. regret B. bother C. confuse D. dream30. A. treasure B. admire C. evaluate D. exploreⅢ. 阅读理解(共两节, 满分50分)第一节(共20小题; 每小题2分, 满分40分)AMonday: Here I am, in the middle of nowhere. This camping trip idea is not getting off to a very good start. It‟s raining and the tent leaks. The hiking seemed t o take forever, and I still can‟t understand how it could all have been up hill! How did I ever let my brother talk me into this? Whenwe get home—if we ever get home—he‟s going to have to do something great to get back on my good side. Maybe he should sponsor a shopping spree (狂购) at the mall!Tuesday: Things are looking up. The sun came out today, so we were able to leave the tents and dry out. We‟re camped at the edge of a small lake that I couldn't see before because of the rain and fog. The mountains are all around us, and the forest is absolutely beautiful. We spent most of the day dragging out everything out of our backpacks or tents and putting it where the sun could dry it out. Later in the afternoon we tried to catch the fish for dinner, but the fish were smarter than we were. At night we built a fire and sang songs happily.Wednesday: We hiked to the far side of the lake and climbed to the top of a small peak. From there we could see how high the other mountains were and how far the forest spread around us. On the way up we passed through a snowfield!Thursday: I caught my first fish! We followed the stream that fed the lake. After about two miles, we came to a section that Carol said “looked …fishy‟”. She had a pack rod (竿), which can be carried in a backpack. I asked to cast it, and I caught a fish on my first try. Carol caught a few more. But they were just too pretty to eat for lunch, so we put them back in the stream.Friday: I can‟t believe we are going home already. It will be nice to get a hot shower, sleep in a real bed, and eat junk food, but the trip has been wonderful. We‟re already talking about another camping adventure next year where we canoe down a river. It‟s hard to believe, but I think this city girl has a little country blood in her veins.31. The writer went on this camping trip because .A. she enjoyed campingB. she wanted to go fishingC. she was influenced by her brotherD. she was tired of staying home32. The whole morning of Tuesday, the writer .A. hiked along the lakeB. dried out her belongingsC. climbed the mountainD. caught the fish for dinner33. It can be inferred that Carol had a pack rod with her because .A. she could not afford to buy a regular fishing poleB. she needed it to get their main source of foodC. she thought the writer of the journal might need itD. she expected to go fishing while they were hiking34. It is likely that the writer will .A. go on another camping tripB. invite Carol to go fishing togetherC. make her brother buy her somethingD. convince her brother to go campingBAn idea came to me, and I turned off the lights in the studio. In the darkness, I took off my shirt and took up the cello (大提琴); it was the first time in my life I‟d felt the instrument against my barechest. I'd never thought about that; music scholars always talk about the resonating properties (共振) of various instr uments, but surely the performer‟s own body must have some effect on the sound. As I dug into the notes I imagined that my own chest and lungs were extensions of the sound box; I seemed to be able to change the sound by the way I sat, and by varying the muscular tightness in my upper body.After improvising for a while, I started playing, still in the darkness. I heard the music through my skin. For the first time I didn't think about how it would sound to anyone else, and slowly, joyfully, gratefully, I started to hear again. The notes sang out, first like a trickle: then like a fountain of cool water bubbling up from a hole in the middle of a desert. After an hour or so I looked up, and in the darkness saw the outline of the cat sitting on the floor in front of me, cleaning her paws and purring loudly, I had an audience again, humble as it was.So that's what I do now with my cello. At least once a clay I find time to tune it, close my eyes and listen. It's probably not going to lead to the kind of comeback I'd be thirsty for—years of playing badly have left scars on my technique—but I might eventually try giving a concert if I feel up to it.Occasionally I feel a stab of longing, and I wish I could give just one more concert on a great stage before my lights blink off, but that longing passes more quickly now. I take comfort in the fact that, unlike the way I felt before, I can enjoy playing for myself now. I feel relaxed and expansive when I play, as if I could stretch out my arms and reach from one end of the apartment to the other. A feeling of completeness and dignity surrounds me and lifts me up.35. The writer put the cello against his bare chest to .A. test music scholars' ideas about the resonating propertiesB. experience the effect of his body on the musical soundC. reduce his muscular tightness in his upper bodyD. check the function of the sound box36. In Paragraph 2, the writer intends to .A. explain his feelings of playing before a catB. identify specific pieces of music he playedC. express his feelings of playing against his bodyD. describe the sound when he played against his body37. From the last paragraph we can infer that the writer was .A. optimisticB. discouragedC. nervousD. enthusiastic38. The passage is mainly about .A. a musician playing the cello for an audienceB. a musician's feelings when playing the celloC. a musician finding joy in playing music in a new wayD. a musician's desire to return to his former professionCWhen a group of children politely stop a conversation with you, saying, “We have to go to worknow,” you‟re left feeling surprised and certainly uneasy. After all, this is the 1990s and the idea of children working is just unthinkable. That is, until you are told that they are all pupils of stage schools, and tha t the “work” they go off to is to go on the stage in a theatre.Stage schools often act as agencies (代理机构) to supply children for stage and television work. More worthy of the name “stage school”are those few places where children attend full time, with a training for the theatre and a general education.A visit to such schools will leave you in no doubt that the children enjoy themselves. After all, what lively children wouldn't settle for spending only half the day doing ordinary school work, and acting, singing or dancing their way through the other half of the day?Then of course there are times for the children to make a name and make a little money in some big shows. Some stage schools give their children too much professional work at such a young age. But the law is very tight on the amount they can do. Those under 13 are limited to 40 days in the year; those over 13 do 80 days. The schools themselves admit that not all children will be successful in the profession for which they are being trained. So what happens to those who don't make it? While all the leading schools say they place great importance on children getting good study results, the facts seem to suggest this is not always the case.39. People would stop feeling uneasy when realizing that the children they're talking to _______.A. attend a stage schoolB. are going to the theatreC. have got some work to doD. love singing and dancing40. In the writer's opinion, a good stage school should _______.A. produce star performersB. help pupils improve their study skillsC. train pupils in language and performing artsD. provide a general education and stage training41. “Profession work” as used in the text means _______.A. ordinary school workB. money-making performancesC. stage training at schoolD. acting, singing or dancing after class42. Which of the following best describes how the writer feels about stage schools?A. He thinks highly of what they have to offer.B. He favors an early start in the training of performing arts.C. He feels uncomfortable about children putting on night shows.D. He doubts the standard of ordinary education they have reached.DOnline shoppers would rather receive an offer for a product or service than make their own offer, according to a study led by a Michigan State University scholar that has implications for the fast-growing e-commerce industry. The findings may come as a surprise given that shopping online is an anonymous (匿名的) process that seemingly can give consumers more confidence to drive a hard bargain, said Don Conlon, Professor of Management in MSU‟s Broad College of Business.But the study found that participants who made their own offers were less successful in sealing the deal and, when they were successful, worried they overpaid. Many shoppers found the process of researching an offer to be a hassle. “Americans are very busy, and it‟s less time-consuming to be the one receiving the offer rather than the one proposing the offer” Conlon said, “People tend to be happier when they‟re in the receiver role.”Online spending in the United States is expected to jump 45 percent in the next four years, from $ 226 billion this year to $ 327 billion in 2017, according to Forrester Research Inc. Nevertheless, researches into this prosperous market remain largely focused on the strategies of companies, rather than those of shoppers. Conlon‟s study is, obviously, a rare exception.Conlon got the idea for the study after considering the difference between two popular sites for hotels and airline flights, , which takes bids, and , which provides offers. Using these two models, Conlon and his fellow researchers conducted a series of experiments with more than 850 people who were charged with booking a fictional hotel room and acquiring a fictional antique car. Not only did participants prefer to receive bids, Conlon said, but they also secured more deals in that receiver role. Further, when they had to make the bids, they were left more mentally taxed and regretful.From an industry perspective, putting customers in the receiver role may help fill more hotel rooms and airplane seats. “If you‟re a business with a lot of products” Conlon said, “you may want to be the one making the offers.” However, when selling single items, such as an antique car, accepting bids may be a better option since that typically drives up the price, he said.43. What can we learn from Para. 1?A. The result of the study gives customers more confidence.B. Scholars aren‟t surprised at the findings of the study.C. Online shoppers don‟t bargain as much as expected.D. E-commerce industry drives more hard bargains.44. It can be concluded from Conlon‟s experiments that______.A. online shopping is time-consumingB. given prices help promote online salesC. online businesses provide a lot of productsD. receiving offers makes online shoppers regretful45. The underlined word “taxed” in Para. 4 probably means______.A. burdenedB. numbedC. relievedD. challenged46. The passage is mainly about______.A. the big advantages of online shoppingB. the rapid development of online shoppingC. online shoppers‟ preference for taking offersD. online companies‟ strategies to improve serviceEHomeownership has let us down. For generations, Americans believed that owning a home wasundoubtedly good. Our political leaders hammered home the point. Franklin Roosevelt held that a country of homeowners was “unconquerable.” Homeownership could even save babies, save children, save families and save America. A house with a lawn and a fence wasn‟t just a nice place to live in or a risk-free investment; it was a way to transform a nation. No wonder leaders of all political types wanted to spend more than $100 billion a year on subsidies and tax breaks to encourage people to buy.But the dark side of homeownership is now all too apparent: Indeed, easy lending stimulated by the cult of homeownership may have triggered the financial crisis. Housing remains a drag on the economy. Existing-home sales in April dropped 27% from the prior month, worsening fears of a double-dip. And all that is just the obvious tale of a housing bubble and what happened when it popped. The real story is deeper and darker still.For the better part of a century, politics, industry and culture lined up to create a fetish of the idea of buying a house. Homeownership has done plenty of good over the decades; it has provided stability to tens of millions of families. Yet by idealizing the act of buying a home, we have ignored the downsides. In the bubble years, lending standards slipped dramatically, allowing many Americans to put far too much of their income into paying for their housing. And we ignored longer-term phenomena too. Homeownership contributed to the hollowing out of cities and kept renters out of the best neighborhoods. It fed America‟s overuse of energy and oil. It made it more difficult for those who had lost a job to find another. Perhaps worst of all, it helped us become casually self-deceiving: By telling ourselves that homeownership was a pathway to wealth and stable communities and better test scores, we avoided dealing with these frightening issues head-on.Now, as the U.S. recovers from the biggest housing bust (破产) since the Great Depression, it is time to rethink how realistic our expectations of homeownership are—and how much money we want to spend chasing them. Many argue that homeownership should not be a goal pursued at all costs.47. Political leaders wanted to spend money encouraging people to buy houses because .A. owning a home was undoubtedly goodB. homeownership was unconquerableC. houses could save families and AmericaD. homeownership could shape a country48. The underlined sentence in Para. 2 means .A. homeownership has quite a lot of bad effectsB. there might be another housing breakdown in the U.S.C. the existing-home sales will keep decreasing in the U.S.D. the result of homeownership is much worse than it appears49. It can be inferred from Para. 3 that .A. it is hard for Americans to get a home loanB. it is the way to wealth to have one‟s own houseC. many Americans choose to live out of urban areasD. homeownership has made many people out of work50. What is the author‟s attitude towards homeownership?A. Favorable.B. Ambiguous.C. Cautious.D. Optimistic.第二节补全对话(共5小题; 每小题2分, 满分10分)Jerry: Hi, Mike. Look like you‟ve got some sun.Mike: I guess so. I spent the weekend on the beach.Jerry: Really? That sounds exciting. __1__Mike: At my friend‟s house. He invited me to stay there for as long as I wanted.Jerry: __2__Mike: Oh, I have a paper to work on.Jerry: __3__ I mean besides lying out in the sun.Mike: I played some volleyball. I never realized how hard it is to run on sand.Jerry: __4__ Did you go swimming?Mike: I intended to. __5__ So I just went fishing.Jerry: All sounds so relaxing.A. What a pity!B. It must be cool.C. Where did you stay?D. But how did you get there?E. So what else did you do out there?F. But the water wasn‟t warm enough.G. Then why not stay there for a longer time?Ⅳ. 阅读表达(共5小题; 每小题2分, 共10分)A 14-year-old girl was attacked by a grey bear while competing in a bike race. She managed to whisper the “bear” to her rescuer. The girl had serious head, neck and leg wounds. Now she is in a dangerous condition in hospital.The girl was taking part in a 24-hour race through Bicentennial Park in Alaska when she was attacked by the bear. Bicentennial Park is next to Chugach State Park where some wild animals live.The animal attacked the girl in a heavily wooded area at about 1:30 am. The girl called emergency services but she was unable to say any word. Another rider Peter Basinger found her lying unconscious on the ground. He told Anchorage Daily News that she managed to say the word “bear”when he stopped to help. Her helmet（头盔）had been knocked off in the attack and rolled into the woods. Mr. Basinger waited with the girl for about 20 minutes until doctors arrived. Armed police travelled 3 km with doctors to pick up the girl.Animal expert Rick Sinnot said something must be done as soon as possible to prevent the bearfrom attacking people again. “It was extremely terrifying,” he said.Mr. Sinnot told Anchorage Daily News that the bear might be a mother. It hurt two runners on a nearby path two weeks ago. He also said that the girl was lucky to have been wearing a bike helmet because the bear had bitten her head several times.56. Who attacked the girl? (Within 3 words)____________________________________________________________________________57. What was the girl doing when she was attacked? (Within 7 words)____________________________________________________________________________58. What did the girl say to emergency services after the attack? (Within 1 word)____________________________________________________________________________59. How did Mr. Basinger help the girl? (Within 7 words)____________________________________________________________________________60. Why did Mr. Sinnot say that the girl was lucky? (Within 10 words)____________________________________________________________________________Ⅴ. 短文改错(共10小题; 每小题1. 5分, 满分15分)下面短文中有10处语言错误。

成都七中嘉祥外国语学校2014级高三零诊模拟化学试卷考试时间：100分钟 总分：100分命题人：曾 玲 审题人：杨彦可能用到的相对原子质量：H-1 C-12 N-14 O-16 Na- 23 S-32 Cl-35.5 Fe-56第Ⅰ卷 选择题(共40分)一、选择题（每题只有一个选项符合题意，每小题2分，共40分） 1选项 现象或事实 解释A ． SiO 2用于制造光导纤维 SiO 2具有导电性B ． 用汽油洗去织物上的油污 汽油能与油污发生取代反应C ． 点燃铝热剂(Al 和Fe 2O 3)焊接钢轨 铝置换出铁,并吸收能量使铁凝固D ． 泡沫灭火器是利用Al 2(SO 4)3溶液与饱和NaHCO 3溶液混合产生气体 Al 3+与HCO 3－相互促进水解,生成阻燃性气体CO 2,隔绝空气2．下列关于化学用语的表示正确的是（ ）A ．CO 2的电子式：B ．质子数为17、中子数为20的氯原子：Cl 2017 C ．镁离子的结构示意图： D ．HClO 的结构式：H —Cl —O3．已知在碱性溶液中可发生如下反应：Fe(OH)3+ClO ﹣+OH ﹣═ FeO 4n ﹣+Cl ﹣+H 2O （未配平）。

则下列有关叙述错误的是（ ）A ．已知FeO 4n ﹣中Fe 的化合价是+6价，则n=2B ．每产生1molCl ﹣，转移2mol 电子C ．FeO 4n ﹣具有强氧化性，一般其还原产物为Fe 3+，可用作新型自来水消毒剂和净水剂D ．若n=2，则该反应中氧化剂与还原剂的物质的量之比为2：34．设N A 为阿伏加德罗常数的值，下列说法正确的是 ( )A ．在过氧化钠与水的反应中，每生成0.1mol 氧气，转移电子的数目为0.4N AB ．常温常压下，1.4gN 2和CO 的混合气体含有的电子数为0.7N AC ．25℃时，1L pH=1的HCl 溶液中，由水电离的H ＋的个数为0.1N AD ．1molCl 2参加反应转移电子数一定为2N A5．下列说法中错误的是 ( )A ．磺化、硝化、风化、钝化都是化学变化B ．蒸馏、干馏、常压分馏、减压分馏、都是物理变化C ．甘油不是油，纯碱不是碱，酚醛树脂不是酯，干冰不是冰D ．水煤气、裂解气、焦炉气、天然气都是混合物6．“类推”这种思维方法在化学学习与研究中有时会产生错误结论，因此类推的结论最终要经过实践的检验，才能决定其正确与否，下列几种类推结论中错误的是 ( ) ①钠与水反应生成NaOH 和H 2，所有金属与水反应都生成碱和H 2②铁露置在空气中一段时间后就会生锈，性质更活泼的铝不能稳定存在于空气中 ③Cu(OH)2受热易分解，Fe(OH)3受热也易分解④Al(OH)3能与NaOH 反应，Be(OH)2也能与NaOH 反应A ．①③B ．②④C ．①②D ．①②④7．常温下下列各组物质中，Y 既能与X 反应又能与Z 反应的是 ( )X Y Z ①NaOH 溶液 Al(OH)3 稀硫酸 ②KOH 溶液 SiO 2 浓盐酸 ③O 2 N 2 H 2 ④ FeCl 3溶液 Cu 浓硝酸A ．①③B ．①④C ．②④D ．②③8．现有五种短周期元素X 、Y 、Z 、Q 、W ，原子序数依次增大，在周期表中X 原子半径最小；X 和W 同主族；Y 元素原子核外电子总数是其次外层电子数的3倍；Q 元素是地壳中含量最高的元素。

四川省成都七中2014高三下4 月第一次周练数学理试题．4月第一次周练数学理试题四川省成都七中2014高三下)分(一、选择题共50分,每题5 , 1.数列满足:则其前10项的和*?}S{a)?Na?2,a?a?2(n10nn11n?B.101C.110 A.100D.111则甲是乙的命题乙:,;: 2.命题甲或2?x5?x?3?yy必要非充分条件 B. A.充分非必要条件既不充分条件也不必 D.C.充分必要条件要条件该程序运行,则3.程序框图如右图所示后输出的值是k C.7 B.6 A.5 D.8线被双曲4.已知直线1??=x22ba22b+a度恰22y a好等于的两条渐近线所截得线段的长其一个焦点则此双曲线的离心率为到渐近线的距离,D.3C.2 A. B. 23?若.设对且5.10?aa?xx?2logsin)x?(0,a4 ,恒成立则的取值范围是a??B. A. ](0,)(0,44??? D. C. ,1)[(1,)(,1)?442 ,一种应用6.在用土计算机进行的数学模拟实验中,其物理速度与时间的关系是微生物跑步参加化学反应21 ,则?)t cos?t(0?tf()?t??21313有最大值 B.A. 有最小值??))(tftf(??662121 D.有最大值C. 有最小值??)f(tt)f(??44,,与的运算“*”为但:或7.定义集合Ax?B?{xA?B?x BA}x?A I B ,按此定义?(X?Y)?Y D.B.C. A.YX U X I Y YX的侧棱8.已知三棱柱的底面在下BBCBABC?A1111射影与底面所成角为与平行,若且,ACBB BD301,的余弦值为则ACB?333 B.o60??BBC1D.C. A. 33624y?x???使得,且9.已知则存在,???R?03xy??0??y sin4)cos2??(xRy,?x??0y??的概率为??? C. A. B.?2484? D.?18使每行每列都恰棋盘中的8将一个10.个小方格染黑,44?则不同的染法种数是有两个黑格,D.90 C.84 A.60 B.78)5分二、填空题(共25分,每题数实中的系数是,则式11.已知的展开857?)?a(x x________.?a y?i2_________. 若,其中,则12.为虚数单位??x?yiiyx,?R,x?2i1n?1)(?的取值范围是,13.则实数若对恒成立n*?2(?1)M?Nn?M n___________.rruuuuuruuuruuuruu的夹角则与,,14.已知,??)(2,0)OB?OC?(2,2)CA?(,22cossin OBOA______________. 的取值范围是圆设15.别分为椭BA,22yx :?0)??1(ab??22ba为,,在点处的为右焦点的左右顶点l?FB ,为切线P中于,为交上异于的一点,直线l?BDAPDMB,A②与椭圆平分有如下结论:①;,点?PMFMPFB?④使得的点;③相切;平分PPM?FPDPM?BM_________________. 其中正确结论的序号是.不存在)分三、解答题(共75,316.(12)16181573从中随机取出有驱虫药杯和分各16183(),全杯称为一次试验将假定每杯被取到的概率相等. 部取出称为试验成功((1)3要求将结果化为最求恰好在第次试验成功的概率).简分数,(2)需要进行多少次相互独立2若试验成功的期望值是? 重复试验?的定义域为分)已知17.(122221?(x?)cos?sin?f(x)(cos3x?x)24?].[,02.求(1)的最小值)x(f的最大值,(2)求,的长为函数边中,, a ABC?2?b345A?)33?f(x角大小及的面积. ABC?B[]体正方)如图,18.(12分DCAB?ABCD1111已知中,E.为棱上的动点CC1.:⊥(1)求证EA BD1所成角的求直线与平面,为棱(2)当的中点时BDAECCA E111. 正弦值时的函数值表示当,19.(12分)设用. 中整数值的个数. 的表达2xx??f(x)*)Nn?1](ng(n)?x?[n,)(xf式(1)求)ng(23n2n3?n2.求(2),设?*1k?)?(n?Na a?(S?1)nkn2)g(n1k?)ng(若,求的最小值. (3),设l)?lZT?l(b?b L??,T?b?b nn1nn2n2分)设20.(13:椭;焦点的准线与轴交于点,为xFF21 2C0)m?y?4mx(1圆1 ,为焦点离心率以设.FCF,?eP2212.是的一个交点CC,21.的方程时,求椭圆(1)当1m?C2直线过的右,(2)在(1)的条件下lC2且, 两点焦点,与交于AAAAFC,122112等于的周长,求的方程.lFPF?12(3)求所有正实数,使得的边长是连续正整数.mF?PF1221.(14分)设函数的定义域是,其中常数.??0?)?xf()(1x?)?[1,??.,求的过原点的切线方程(1)若?1?)?yf(x恒成对,(2)当时,求最大实数使不等式2??02?x?Ax?x?xf()?1A. 立?1?n1?1k.,对任何时(3)证明当,有???*?1?Nn??)(()??1nkk2k?理科参考解答一、C BACD,BACDD9.解.可行域是一个三角形,面积为2;又直线系与圆相切,故该三角形不被该直线系扫到的部分是一个面积为,的扇形,从而被直线系扫到部半径为圆心角为分的面积为,故所求概率为.15.解.由上次中根出的题知①成立;写出椭圆在点处的切线知②成立;于是平分,故③不成立;若,则的斜边中线,,这样的有4个,为故④不成立.而种不同选法共有杯杯中任选3,,从三、16.解.(1)6从而一次试验成功的11618的选法只有种,3选到的杯都是.概率为为验前故两次试都没成概率的次,第3才成功功.,,)( 2假设连续试验次则试验成功次数从而其期,再由望为可解出. []先化简的解析式解17..(1):, ,得由.,的最小值所以函数此时,知函数的最大值(2)由(1). 即故中,,,,,(正弦定理),再由,于是,故知从而.的面积.连解一.设,连8.1, (1)由,面知.故, 又面. 便得⊥面再由,而,,在正(2)中且面, 又,平面,. 故⊥面于是,,为二面角的平面角为棱且,中—,的中点正方体ABCD 设棱长为,由平面几何知识易得满足,,. 故与平面故是直线再由面所成知,.角. 与平面故直线,又所成角的正弦是分别以为轴正向, 解二.建立空间直角坐标系..设正方体棱长为.易得 (1),从而, 则, 设, 于是,,, 则(2)由题设.则,设是平面,即的一个法向量与故若记,.于是可取易得的夹角,所成角的正弦是,为,则有故直线与平面.单在增,值对解19..数函,域为,.故(2),故.得由 (3),且两式相减,得且,则的最小值是于是7.故若再由离心,.(1)20.解由条件,是椭圆的两焦点,故半焦距为率为知半长轴长为,从而的方程为,其右准线方程为.故当时.的方程为,其右准线方程为,的方程是而.(1)由可知的周长.又,(2)与方故不垂直于轴,,可设其方程为矛盾若垂直于轴,易得,, ,程联立可得从而,.故的方程为或令可解出,从而若的 (3)由于,由在椭圆上知,由在抛物线上知,且,令得则必为正整数且边长是连续正整数,,..,,,但由的方程消去应得而为这个方程的一个根故解得或.故存在使得的边长是连续正整显然不合题意而适合,.数21.解.(1).若切点为原点,由知切线方程;为由于,若切点不是原点,,设切点为知,在内有唯一的故由切线过原点根..,又故切线方程为和综上所述,所求切线有两条,方程分别为.(2)令,则,,显然有,且的导函数为恒成立知,, 则若,由对从对恒有而对单调增在,即,从而恒成立对,从而恒成立,单调增在.知存在,由,使若,则得恒成立对对即,,恒成立再由知存在,使得对恒成立,再由便知恒成立.不能对.的最大值是所求综上所述,。

四川省成都七中届高三化学月考试试题（含解析）可能用到的相对原子质量：一、选择题：本题共个小题，每小题分。

在每小题给出的四个选项中，只有一项是符合题目要求的。

.化学与生产、生活密切相关。

下列叙述不正确的是. 用氯化钠腌制食品，可延长食品的保存时间. 用硫酸亚铁补铁时，不可同时服用维生素. 用铝箔制成的食品包装“锡纸”，可以包裹食品在烤箱中加热. 用纤维素和淀粉为原料制成可降解塑料，有利于减少白色污染【答案】【解析】【详解】.氯化钠属于食品防腐剂，可以延长食品的保存时间，故正确；.硫酸亚铁和维生素不反应，二者都具有还原性，能同时服用，故错误；.铝是金属，具有良好的导热性，故正确；.塑料通常不能降解，易形成白色污染。

但是，用纤维素或淀粉等能水解的物质为原料生产的塑料可以降解，因而可以减少白色污染，故正确。

故选。

.下列叙述正确的是. 等质量的金刚石和石墨所含的原子数相同. 常温常压下，与，所含的分子数相同. 标准状况下，与所含共价键数目相同. 相同体积、相同物质的量浓度的溶液和溶液所含离子数目相同【答案】【解析】【详解】.金刚石和石墨都只有碳原子，所以等质量的二者含有相同的碳原子，故正确；.二氧化氮能转化为四氧化二氮，这一个可逆反应，在一定的条件下可以达到化学平衡状态。

因与的质量不相等，故其分子数也不相同，故错误；.标况下，氟化氢不是气体，不能根据气体摩尔体积计算其物质的量，故错误；.醋酸钠溶液中醋酸根离子水解，所以促进水的电离，溶液显碱性，根据电荷守恒分析，()()()()，在氯化钠溶液中存在：()()()()，氯化钠溶液显中性，醋酸钠溶液显碱性，故醋酸钠溶液中的氢离子数小于等体积的纯水中的氢离子数，故错误。

故选。

.下表选用的装置和试剂能达到相应实验目的的是. 制. 收集氨气. 接收蒸馏的馏分. 准确量取一定体积溶液【答案】【解析】【详解】.铜和稀硫酸不反应，故错误；.氨气的密度比空气小，用向下排空气法收集，故正确；.接收馏分的装置不能密封，要保持系统内外气压相同，故错误；.重铬酸钾具有强氧化性，不能使用碱性滴定管量取该溶液，故错误。

成都七中2014届高三“一诊”模拟化学试题命题人：张永红 周炜 审题人：高三化学备课组相对原子质量: H —1 C —12 O —16 Na —23 Al —27 S —32 Fe —56一、选择题(本题包括7小题。

每小题只有一个．．．．选项符合题意) 1．下列说法正确的是A ．从海水中提取物质必须使用化学方法B ．石英只能用于生产光导纤维C ．右图装置可以除去Cl 2中的O 2D ．只改变温度可以改变可逆反应的平衡状态2．常温下，下列各组离子在指定溶液中可能大量共存的是A ．滴入甲基橙显红色的溶液中：K +、Fe 2+、Cl —、NO 3— B ．常温时，水电离出的c (H +)=1×10-12 mol/L 的溶液中：K +、AlO 2—、CH 3COO —、SiO 32—C ．c (OH —)/c (H +)=1012的溶液中：SO 32—、NH 4+、NO 3—、K +D ．c (SCN —)= 0.1 mol/L 的溶液中：Fe 3+、NH 4+、NO 3—、Cu 2+3．下列与化学概念有关的说法或化学用语不．正确．．的项是 ①用石墨作电极电解NH 4Cl 溶液的阳极反应式：2Cl —-2e —＝Cl 2↑②实验室制取的Fe(OH)3胶体呈透明的红褐色液体，属于纯净物，反应的化学方程式为：FeCl 3+3H 2O ＝Fe(OH)3(胶体)+3H +③在酸化碘化亚铁溶液中通入少量氧气：4I －+O 2+4H +＝2I 2+2H 2O ④已知K a 2(H 2CO 3)<K a (HClO)<K a 1(H 2CO 3)，则少量CO 2通入NaClO 溶液中离子方程式为：2ClO —+CO 2+H 2O ＝CO 32—+2HClO ⑤K sp (BaCO 3)=8.1×10-9，BaCO 3饱和溶液中：c (Ba 2+)＝c (CO 32—)>c (H ＋)＝c (OH －) A ． ②③⑤ B ．①④⑤ C ．②④⑤ D ．②③④4．质量分别为64g 的SO 2和O 2混合后，按2SO 2(g)+O 23(g) ΔH ＝-Q (Q >0)kJ/mol ， 在一定条件下的绝热恒容(假设V L)容器中达到平衡，下列说法正确的是A. O 2的转化率比SO 2的更大B. 达平衡时共转移的电子数一定小于N AC. 达平衡时共放出热量小于Q /2 kJD. 可由反应前后压强变化确定平衡常数5．25℃浓度均为0.1 mol·L -1的HA 溶液和BOH 溶液，pH 分别是1和11。