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2018-2019学年高一化学同步人教版必修二课时跟踪检测 (十六) 乙 醇(含答案)

2018-2019学年高一化学同步人教版必修二课时跟踪检测 (十六) 乙 醇(含答案)
2018-2019学年高一化学同步人教版必修二课时跟踪检测 (十六) 乙 醇(含答案)

课时跟踪检测(十六)乙醇

1.下列有关乙醇的说法正确的是()

A.用酒精作燃料可降低碳的排放

B.通常状况下,不能与金属钠反应

C.在加热和有铜存在下,可与氧气反应生成乙醛

D.在水溶液中能够电离产生H+,呈现弱酸性

解析:选C A项,乙醇中含有碳元素,燃烧会产生CO2,错误;B项,乙醇中含有羟基,能与金属钠反应放出氢气,错误;C项,在加热和有铜或银存在下,可与氧气反应生成乙醛,正确;D项,乙醇属于非电解质,在水溶液中不能电离产生H+,错误。

2.下列有关乙醇的表述正确的是()

A.乙醇分子中含有甲基,甲基的电子式为

B.乙醇的结构简式为C2H6O

C.乙醇分子中羟基的电子式为[·×O·×H]-

D.乙醇分子的填充模型为

解析:选D甲基的电子式中碳原子的周围有7个电子,A项错误;乙醇的结构简式为CH3CH2OH,B项错误;羟基呈电中性,C项错误。

3.下列物质中,分别加入金属钠,不能产生氢气的是()

A.苯B.蒸馏水

C.无水酒精D.75%的酒精

解析:选A乙醇、H2O都能与Na发生置换反应生成H2,75%的酒精是水和乙醇组成的混合物,也能与Na反应生成H2;苯不能与Na反应生成H2。

4.下列物质不能氧化乙醇的是()

A.氧气B.酸性高锰酸钾溶液

C.酸性重铬酸钾溶液D.稀硫酸

解析:选D乙醇可被氧气氧化成二氧化碳和水或乙醛;也可被强氧化剂酸性高锰酸钾溶液或酸性重铬酸钾溶液氧化成乙酸,但不能被稀硫酸氧化。

5.下列乙醇的化学性质中不是由羟基所决定的是()

A.跟活泼金属Na等发生反应

B.在足量O2中完全燃烧生成CO2和水

C.当Cu或Ag存在时跟O2发生反应生成乙醛和H2O

D.乙醇被酸性高锰酸钾氧化为乙酸

解析:选B乙醇和金属Na反应是钠置换羟基上的氢;乙醇的催化氧化是羟基上的氧氢键以及与羟基相

连的碳原子上的碳氢键断裂,形成;而燃烧时乙醇分子中的化学键全部断裂,不是由羟基所决定的。

6.乙醇分子中的化学键如图所示,下列关于乙醇在各种反应中断裂化学键的说法不正确的是()

A.与金属钠反应时①断裂

B.在加热和铜做催化剂的条件下与O2反应时断裂①和③

C.在加热和铜做催化剂的条件下与O2反应时断裂①和⑤

D.在空气中完全燃烧时断裂①②③④⑤

解析:选C乙醇与钠反应生成乙醇钠,羟基中的O—H键断裂,A正确;乙醇催化氧化生成乙醛时,断裂①和与羟基直接相连的碳氢键即③,B正确,C错误;乙醇完全燃烧时,化学键①②③④⑤全部断裂,D正确。

7.酒驾是引发交通事故的重要原因,醉驾要入刑。交警对驾驶员进行呼气酒精检测的原理是橙色的酸性K2Cr2O7水溶液遇乙醇迅速生成蓝绿色Cr3+。下列对乙醇的描述与此测定原理有关的是()

①乙醇沸点低②乙醇密度比水小③乙醇有还原性④乙醇是烃的含氧衍生物

A.②④B.②③

C.①③D.①④

解析:选C酒精用于对驾驶员酒驾的检测,是因为酒精沸点较低,易挥发,且具有还原性,酒精蒸气可使橙色的酸性K2Cr2O7溶液变为蓝绿色。

8.分子式为C4H10O且可与金属钠反应放出氢气的有机化合物有(不考虑立体异构)()

A.3种B.4种

C.5种D.6种

解析:选B分子式为C4H10O且可与钠反应放出氢气的有机物可表示为C4H9—OH,由于C4H9—有4种结构,再结合—OH的取代位置可知,符合题意的同分异构体有4种。

9.生活中的有机物种类丰富,在衣食住行等多方面应用广泛,其中乙醇是比较常见的有机物。

(1)乙醇是无色有特殊香味的液体,密度比水的________。

(2)工业上用乙烯与水反应可制得乙醇,该反应的化学方程式为____________________。

反应类型是__________________。

(3)下列属于乙醇的同系物的是________,属于乙醇的同分异构体的是________(填字母)。

C .乙醚(CH 3CH 2OCH 2CH 3)

D .甲醇

E .CH 3—O —CH 3

F .HO —CH 2CH 2—OH (4)乙醇能够发生氧化反应:

①46 g 乙醇完全燃烧消耗________ mol 氧气。

②乙醇在铜作催化剂的条件下可被氧气氧化为乙醛,反应的化学方程式为________________________________________________________________________。

解析:(1)乙醇的密度比水的密度小。(2)乙烯与水发生加成反应,方程式为CH 2===CH 2+H 2O ――→催化剂

△CH 3CH 2OH 。(3)同系物满足两个条件:结构相似,组成相差n 个CH 2原子团,故甲醇与乙醇互为同系物;同分异构体满足两个条件:分子式相同,不同的空间结构,故CH 3—O —CH 3与乙醇互为同分异构体。(4)①乙醇燃烧方程式:C 2H 5OH +3O 2――→点燃

2CO 2+3H 2O ,故1 mol 乙醇完全燃烧消耗3 mol O 2,②乙醇催化氧化的方程式为2CH 3CH 2OH +O 2――→Cu

2CH 3CHO +2H 2O 。 答案:(1)小

(2)CH 2===CH 2+H 2O ――→催化剂高温、高压CH 3CH 2OH 加成反应 (3)D E

(4)①3 ②2CH 3CH 2OH +O 2――→Cu

△2CH 3CHO +2H 2O

10.为了测定乙醇的结构式是 还是 ,利用乙醇

和钠的反应,设计如图装置进行实验,在烧瓶中放入足量的钠,从分液漏斗中缓缓滴入一定量的乙醇,通过测量量筒中水的体积,就可知反应生成氢气的体积。

(1)实验前检验该装置的气密性的实验操作是__________________________________ ________________________________________________________________________。

(2)有人认为装置中有空气,所测的气体体积应扣除装置中空气的体积,才是氢气的体积,你认为________(填“正确”或“不正确”)。

(3)如果实验开始前b导管内未充满水,则实验结果将________(填“偏大”或“偏小”)。

(4)若测得有1.15 g C2H6O参加反应,把量筒c中水的体积换算成标准状况下H2的体积为280 mL,试结合计算和讨论,判断下面Ⅰ和Ⅱ两式中,哪个正确?______(填“Ⅰ”或“Ⅱ”)。

解析:该实验的关键是准确测量反应产生气体的体积,根据产生气体的体积可以确定被置换的氢原子的个数。(3)中如果实验开始前b导管内未充满水,则会使排出水的体积减小,故实验结果偏小。(4)参加反应的乙醇的物质的量是0.025 mol,生成氢气的物质的量是0.012 5 mol,即乙醇分子中的6个氢原子所处的化学环境并不完全相同,有1个应不同于其他的氢原子,从而确定乙醇的结构为Ⅱ式。

答案:(1)连接好装置,关闭分液漏斗的活塞,将右侧导管插入水槽,微热烧瓶,右侧导管若有气泡冒出,冷却后形成一段水柱,且一段时间内水柱不变化,证明装置气密性良好

(2)不正确(3)偏小(4)Ⅱ

1.下列关于乙醇的说法中正确的是()

A.乙醇在水溶液中能电离出少量的H+,所以乙醇是电解质

B.乙醇结构中有—OH,所以乙醇显碱性

C.乙醇分子中只有—C2H5上的氢原子可被钠置换出来

D.乙醇是一种很好的溶剂,能溶解许多无机化合物和有机化合物,人们用白酒浸泡中药制成药酒就是利用了这一性质

解析:选D A项,乙醇几乎不电离,属于非电解质,错误;B项,羟基(—OH)不是氢氧根(OH-),乙醇不显碱性,错误;C项,金属钠与乙醇的反应中,是Na置换羟基中的氢,错误。

2.下列变化可以直接通过取代反应来实现的是()

A.CH3CH2OH―→CH3CHO

B.CH2===CH2―→CH3—CH2Br

C.

D.CH3CH2OH―→CH3COOH

解析:选C A、D为氧化反应,B为加成反应,C为取代反应。

3.向盛有乙醇的烧杯中投入一小块金属钠,下列对实验现象的描述中正确的是()

①钠块沉入乙醇液面的下面

②钠块熔化成小球

③钠块在乙醇的液面上游动

④钠块表面有气体放出

A.①②B.②③

C .③④

D .①④

解析:选D 钠的密度比乙醇的密度大,故钠块会沉入乙醇液面以下,①正确,③不正确;乙醇与钠反应比较平缓,放出的热量不足以使钠熔化,②不正确;钠与乙醇反应有氢气放出,④正确。

4.某化学反应过程如右图所示。由图得出的判断,错误的是( )

A .生成物M 的化学式为C 2H 4O

B .乙醇发生了还原反应

C .铜是此反应的催化剂

D .反应中有红黑交替变化的现象

解析:选B 图中物质的变化,乙醇――→CuO

乙醛,则M 为乙醛;Cu ――→O 2

CuO ――→乙醇

Cu ,铜在反应中作催化剂。

5.按图所示装置,持续通入X 气体,可以看到a 处固体变为红色,b 处变蓝,c 处得到液体,则X 气体是(已知NH 3具有较强的还原性)( )

A .H 2

B .CO 和H 2

C .NH 3

D .CH 3CH 2OH(气体)

解析:选D A 、B 、C 、D 四个选项中的气体均能使a 处固体变红,b 处变蓝,但c 处能得到液体的仅有D ,该液体是CH 3CHO 。

6.将a g 光亮的铜丝在酒精灯上加热后,迅速插入下列溶液中,然后取出干燥,如此反复几次,最后取出铜丝,洗涤、干燥后称其质量为b g 。下列所插入的物质与铜丝质量关系不正确的是( )

A .无水乙醇:a =b

B .石灰水:a >b

C .NaHSO 4溶液:a >b

D .盐酸:a >b

解析:选B 铜丝在酒精灯上加热后,发生反应:2Cu +O 2=====△

2CuO ,当插入无水乙醇中时,发生反应:CuO +CH 3CH 2OH ――→△

CH 3CHO +Cu +H 2O ,故a =b ;当插入NaHSO 4溶液或盐酸中,CuO +2H +

===Cu 2

+H 2O ,故a >b ;当插入石灰水中时,Cu 和CuO 与石灰水均不反应,固体质量增加,故a

7.某有机物蒸气,完全燃烧时需3倍于其体积的氧气,产生2倍于其体积的二氧化碳,该有机物可能是( ) ①C 2H 4 ②C 2H 5OH ③CH 3CHO ④CH 3COOH A .①② B .②③ C .③④

D .①④

解析:选A 某有机物蒸气,完全燃烧时产生2倍于其体积的二氧化碳,说明该有机物的1个分子中含有2个碳原子,①V (O 2)=2+44=3,正确;②V (O 2)=2+64-12=3,正确;③V (O 2)=2+44-1

2=2.5,错误;④V (O 2)

=2+44-2

2

=2,错误。

8.萜品醇可作为消毒剂、抗氧化剂和溶剂。已知α-萜品醇的结构简式如右式,则下列说法错误的是( ) A .1 mol 该物质最多能和1 mol 氢气发生加成反应 B .该物质属于烃 C .该物质能使溴水褪色 D .分子式为C 10H 18O

解析:选B A 项,该分子中含有1个碳碳双键,则1 mol 该物质最多能和1 mol 氢气发生加成反应,正确;B 项,该分子中除有碳、氢原子外,还有氧原子,不属于烃,错误;C 项,该有机物分子中含有碳碳双键,能使溴水褪色,正确;D 项,该物质的分子式为C 10H 18O ,正确。

9.通过粮食发酵可获得某含氧有机化合物X ,其相对分子质量为46,其中碳的质量分数为52.2%,氢的质量分数为13.0%。

(1)X 的分子式是______________。 (2)X

______________________________________________(有机物用结构简式表示)。

(3)X 与空气中的氧气在铜或银催化下反应生成Y ,Y 的结构简式是______________。 (4)X 与酸性高锰酸钾溶液反应可生成Z 。Z 的名称为________。

解析:(1)根据题意,X 的分子中含C 的个数为46×52.2%12=2,含H 的个数为46×13.0%

1=6,含O 的个数

46×(1-52.2%-13.0%)

16

=1,所以X 的分子式为C 2H 6O 。

(2)X 能与钠反应,则X 为乙醇,其与钠反应的化学方程式为2Na +2CH 3CH 2OH ―→2CH 3CH 2ONa +H 2↑。 (3)X 在铜或银作催化剂的条件下与空气中的O 2反应,生成乙醛(Y),其结构简式为CH 3CHO 。 (4)根据题意知Z 为乙酸。 答案:(1)C 2H 6O

(2)2Na +2CH 3CH 2OH ―→2CH 3CH 2ONa +H 2↑ (3)CH 3CHO (4)乙酸

10.有关催化剂的催化机理等问题可以从“乙醇催化氧化实验”得到一些认识,某教师设计了如图所示装置(夹持装置等已省略),其实验操作为:先按图安装好装置,关闭活塞a 、b 、c ,在铜丝的中间部分加热片刻,然后打开活塞a 、b 、c ,通过控制活塞a 和b ,而有节奏(间歇性)地通入气体。在M 处观察到明显的实验现象。

试回答以下问题:

(1)A 中发生反应的化学方程式为________________________________________ ____________,B 的作用是______________________________________________

__________;C 中热水的作用是__________________________________________ ____________________________。

(2)M 处发生反应的化学方程式为___________________________________________ ________________________________________________________________________。 (3)从M 管中可观察到的现象为____________________________________________

________________________________________________________________________,从中可认识到该 实验过程中催化剂__________(填“参加”或“不参加”)化学反应,还可以认识到催化剂起催化作用需要一定的________。

(4)实验进行一段时间后,如果撤掉酒精灯,反应___________________________________ (填“能”或“不能”)继续进行,其原因是___________________________________ ________________________________________________________________________。

解析:装置中各部分作用:A 为氧气的简易制备装置;B 的作用是干燥O 2;C 利用水浴加热方式,使D 中乙醇变为蒸气进入M 参加反应;在M 中Cu 的作用下,乙醇被O 2氧化成乙醛,进入F 试管中。该反应为放热反应,所以撤掉酒精灯后利用放出的热量能维持反应继续进行。

答案:(1)2H 2O 2=====MnO 2

2H 2O +O 2↑ 干燥O 2 使D 中乙醇变为蒸气进入M 参加反应 (2)2CH 3CH 2OH +O 2――→Cu

2CH 3CHO +2H 2O (3)受热部分的铜丝由于间歇性地鼓入氧气而交替出现变黑、变红的现象 参加 温度 (4)能 乙醇的催化氧化反应是放热反应,反应放出的热量能维持反应继续进行

新人教版必修一 Unit5 Period 1课时跟踪检测

Unit 5 Languages Around the World Period One 1.Chinese c__________ are made out of simple basic strokes. 2. C is the art of producing beautiful handwriting using a brush. 3. Like China, the USA is a large country in which many different d are spoken. 4. The rose is regarded as a s of love in both China and some Western countries. 5. Carbon dioxide(CO?) is one of the main (因素) in global warming which is negatively affecting everyone. II.Blank filling.(在空白处填入适当的内容(1个单词)或括号内单词的正确形式。) 1.Diligence is the means which one makes up for one's dullness(迟钝). 2. Health problems _________ (connect) with bad eating habits and a lack of exercise. 3. There are various reasons people choose to learn a foreign language 4. In the last few years the city of Bozhou has spread out rapidly in all (direction). 5. the growing heat these workers are still all in top hats and heavy uniforms. 6. They enjoy participating in a wide ________(various) of activities, both locally and further afield. 7. To meet the needs of _________ unified country, the First Qin Emperor took a series of measures. 8. We think that peace is not only a distant goal we seek, it is a means by which we arrive at that goal. 9. Today, Spanish is the world’s fourth most commonly(speak) language, after Chinese, English and Hindi. 10. Changing the attitude _____ learning foreign languages may be a hard task but the government decides to try! 1. I live in the place which the medicine capital city Bozhou. 2. students are registering for extra-curricular activities. 3. Every means has been tried, but we find only _______________ can we learn English well. 4. Chinese is an old language, and its earliest characters nearly four thousand years ago. 5. Because of his broken English, he couldn’t make himself understood, which the embarrassment. 6. The designer, with whom I have been working since 1999, shaping my views of the work. 7. There are extra-curricular activities including sports, painting, dancing and playing music as well. 8. It is what parents say and do in family life, which may have a life-long effect on their children. 9. In southern China,bats the door, because they are symbols of luck, health, wealth and happiness. 10. The school year two semesters, the first of which is September through December, the second January through May. IV. Cloze. (在空白处填入适当的内容(1个单词)或括号内单词的正确形式。) Nobody wants to be aged, but____1____it comes to visiting cities, most of us want to visit the world's oldest cities. Luoyang is one of the oldest and most ____2____(attract) cities in the world that I'd like to recommend to you. Luoyang stands out ____3____the oldest continually inhabited (持续居住的) city in Asia. The city is considered to be ____4____birthplace of Chinese culture and history as well as being one of the Seven Ancient Capitals of China. There ____5____ (be) no other city in China that has seen so many____6____(dynasty) like Luoyang. With such a long and exciting history, Luoyang has really a lot ____7____ (offer). The longmen Grottoes(龙门石窟), which ____8____(include) in the world Heritage List (世界遗产名录)since 2000, and many historic Buddhist temples constantly attract tourists from all over the world. Luoyang is also famous 9 the White Horse Temple, the earliest Buddhist temple ____10____(build) in China. Are you anxious to visit the city? V. Reading Comprehension

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高中英语学习材料 madeofjingetieji 课时跟踪检测(一) Warming Up & Reading — Language Points Ⅰ.单句语法填空 1.It was in prison that he set down the story. 2.After going through the woods, you’ll find a hospital. 3.The house fell down before she was able to save her little daughter. 4.She joined an English club in order to improve her English. 5.The couple told us it was the fourth time that they had_visited (visit) the West Lake. 6.Before eating, please add some salt to the dish. 7.As far as I’m concerned (concern), it is not a good idea to go camping tonight. 8.While swimming (swim) in the river, we saw a fish jump out of the river. 9.It is no good staying up too late every day. Ⅱ.完成句子 1.He was_very_upset_about_the_fact (为此事很难过) that they couldn’t go to the beach. 2.The teacher made every effort to calm_his_student_down (使他的学生冷静下来) after the exam. 3.I got up early in_order/so_as_not_to_be_late_for_school (为了上学不迟到). 4.The police went_through_our_luggage (检查了我们的行李) before we got on the plane. 5.A_series_of_wet_days (一连串的雨天) drove me crazy. 6.The time I spend on reading every day adds_up_to_two_hours (合计两个小时).7.I won’t go there unless_(I_am)_invited (除非受到邀请). 8.He treated me so badly that I couldn’t_stand_it_any_longer (不能再忍受了). Ⅲ.阅读理解 A Dear Mr Black, I used to have a really good group of friends. Now they’re all getting into smoking and drinking. I want to find a new group of friends, but I’m shy. How can I know who are the types of people I should make friends with, and who will accept me? Yours, Mike

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课时跟踪检测(十二)师说 (时间:40分钟满分:60分) 一、文言基础专练(28分) 1.下列各句中加点的词语,解释不正确的一项是(3分)( ) A.吾从而师.之师:以……为师 B.吾未见其明.也明:明智 C.君子不齿.齿:并列 D.圣人无常.师常:经常 解析:选D D项,常:固定的。 2.下列加点词语的含义与现在的用法分析正确的一组是(3分)( ) ①古之学者 ..受业解惑也③今之众人 ..,其下圣人也亦远矣④小...必有师②师者,所以传道 学.而大遗,吾未见其明也⑤弟子不必 .. ..不如师,师不必贤于弟子⑥年十七,好古文A.全不相同 B.②③⑤和现在的用法相同 C.全都相同 D.①③⑥和现在的用法相同 解析:选A ①学者,古义:求学之人;今义:在学术上有一定成就的人。②传道,古义:传播道理,文中指传播儒家思想;今义:通常指传播宗教思想。③众人,古义:普通人;今义:大家。④小学,古义:在文中指对小的方面学习;今义:对儿童、少年实施初等教育的学校。⑤不必,古义:不一定;今义:用不着,不需要。⑥古文,古义:先秦两汉的文字;今义:相对于白话文的文言文。 3.从句式特征看,与“师者,所以传道受业解惑也”一句相同的一项是(3分)( ) A.道之所存,师之所存也B.句读之不知,惑之不解 C.不拘于时,学于余D.圣人无常师 解析:选A A项与例句同为判断句。B项是宾语前置;C项是被动句;D项是一般句式。 4.下列句子中,“师”字的用法不同于其他三项的一项是(3分)( ) A.于其身也,则耻师.焉 B.或师.焉,或不焉 C.爱其子,择师.而教之 D.师.道之不复,可知矣 解析:选C C项为名词,译为“老师”,其他三项为动词,意为“从师”。 5.下列加点词语含义相同的一组是(3分)( )

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