排查落实练2

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排查落实练二常考易错的50个离子方程式书写再落实1. 向水中通入氯气:_____________________________________ 答案:Cl 2+H 2O H ++Cl -+HClO2. 实验室制备氯气:_______________________________________________________答案:MnO 2+4H ++2Cl -=====△Mn 2++Cl 2↑+2H 2O 3. 工业制漂白粉:_______________________________________________________ 答案:Cl 2+Ca(OH)2===Ca 2++ClO -+Cl -+H 2O4. 工业制备氯气:_______________________________________________________答案:2Cl -+2H 2O=====电解Cl 2↑+H 2↑+2OH - 5. NH 4HCO 3溶液与过量的KOH 浓溶液共热:_______________________________________________________答案:NH +4+HCO -3+2OH -=====△NH 3↑+CO 2-3+2H 2O 6. NH 4HCO 3溶液与足量的Ba(OH)2溶液混合共热:_______________________________________________________答案:NH +4+HCO -3+Ba 2++2OH -=====△NH 3↑+BaCO 3↓+2H 2O7. MgSO 4溶液与Ba(OH)2溶液反应:_______________________________________________________答案:Mg 2++2OH -+SO 2-4+Ba 2+===BaSO 4↓+Mg(OH)2↓8. 向NaHCO3溶液中加入过量澄清石灰水:_______________________________________________________ 答案:HCO-3+Ca2++OH-===CaCO3↓+H2O9. 向澄清石灰水中加入过量NaHCO3溶液:_______________________________________________________ 答案:Ca2++2OH-+2HCO-3===CaCO3↓+CO2-3+2H2O10. 向AlCl3溶液中加入过量氨水:_______________________________________________________答案:Al3++3NH3·H2O===Al(OH)3↓+3NH+411. 向Al2(SO4)3溶液中加入过量NaOH溶液:_______________________________________________________ 答案:Al3++4OH-===AlO-2+2H2O12. 铝与NaOH溶液反应:_______________________________________________________ 答案:2Al+2OH-+2H2O===2AlO-2+3H2↑13. 硅与NaOH溶液反应:_______________________________________________________ 答案:Si+2OH-+H2O===SiO2-3+2H2↑14. 大理石溶于醋酸:_______________________________________________________ 答案:CaCO3+2CH3COOH===Ca2++2CH3COO-+H2O+CO2↑15. 铜与稀硝酸反应:_______________________________________________________ 答案:3Cu+2NO-3+8H+===3Cu2++2NO↑+4H2O16. 明矾溶于水形成胶体:_______________________________________________________ 答案:Al3++3H2O Al(OH)3(胶体)+3H+17. Fe3O4溶于足量稀硝酸:_______________________________________________________答案:3Fe3O4+28H++NO-3===9Fe3++NO↑+14H2O18. 铁和过量稀硝酸反应:_______________________________________________________ 答案:Fe+4H++NO-3===Fe3++NO↑+2H2O19. 过量铁粉与稀硝酸反应:_______________________________________________________ 答案:3Fe+8H++2NO-3===3Fe2++2NO↑+4H2O20. 氧化铝溶于NaOH溶液:_______________________________________________________ 答案:Al2O3+2OH-===2AlO-2+H2O21. 氢氧化铝溶于NaOH溶液:_______________________________________________________ 答案:Al(OH)3+OH-===AlO-2+2H2O22. 向NaAlO2溶液中通入足量CO2气体:_______________________________________________________ 答案:AlO-2+2H2O+CO2===Al(OH)3↓+HCO-323. 向苯酚钠溶液中通入少量CO2气体:_______________________________________________________答案:HCO-3 24. 小苏打与NaOH溶液混合:_______________________________________________________答案:HCO -3+OH -===H 2O +CO 2-325. CuSO 4溶液中通入H 2S 气体:_______________________________________________________ 答案:Cu 2++H 2S===CuS ↓+2H +26. 向FeBr 2溶液中通入少量氯气:_______________________________________________________ 答案:2Fe 2++Cl 2===2Fe 3++2Cl -27. 向FeBr 2溶液中通入过量氯气:_______________________________________________________ 答案:2Fe 2++4Br -+3Cl 2===2Fe 3++2Br 2+6Cl -28. 向FeBr 2溶液中通入等物质的量的氯气:_______________________________________________________ 答案:2Fe 2++2Br -+2Cl 2===2Fe 3++Br 2+4Cl -29. 向澄清石灰水中通入过量CO 2气体:_______________________________________________________答案:OH -+CO 2===HCO -330. 向Fe(NO 3)2溶液中滴入盐酸:_______________________________________________________答案:3Fe 2++NO -3+4H +===3Fe 3++NO ↑+2H 2O31. 向沸水中滴加FeCl 3溶液制备Fe(OH)3胶体:_______________________________________________________答案:Fe 3++3H 2O=====△Fe(OH)3(胶体)+3H + 32. 向FeCl 3溶液中加入铜粉:_______________________________________________________ 答案:2Fe 3++Cu===2Fe 2++Cu 2+33. 氢氧化铁溶于氢碘酸溶液:_______________________________________________________ 答案:2Fe(OH)3+6H++2I-===I2+2Fe2++6H2O34. 用硫氰化钾溶液检验Fe3+:_______________________________________________________ 答案:Fe3++3SCN-===Fe(SCN)335. NO2气体溶于水:_______________________________________________________ 答案:3NO2+H2O===2H++2NO-3+NO36. KMnO4溶液与浓盐酸反应:_______________________________________________________ 答案:2MnO-4+10Cl-+16H+===2Mn2++5Cl2↑+8H2O37. KClO3溶液与浓盐酸反应:_______________________________________________________ 答案:ClO-3+5Cl-+6H+===3Cl2↑+3H2O38. KMnO4溶液与H2O2反应:_______________________________________________________ 答案:2MnO-4+5H2O2+6H+===2Mn2++5O2↑+8H2O39. FeSO4溶液中加入用H2SO4酸化的H2O2溶液:_______________________________________________________ _______________________________________________________ 答案:2Fe2++H2O2+2H+===2Fe3++2H2O40. 0.01 mol·L-1 NH4Al(SO4)2溶液与0.02 mol·L-1 Ba(OH)2溶液等体积混合:_______________________________________________________ 答案:NH+4+Al3++2SO2-4+2Ba2++4OH-===NH3·H2O+Al(OH)3↓+2BaSO4↓41. 向明矾溶液中加入过量的Ba(OH)2溶液:_______________________________________________________ _______________________________________________________ 答案:Al3++2SO2-4+2Ba2++4OH-===2BaSO4↓+AlO-2+2H2O42. 亚硫酸钠溶液中加入足量HNO3:_______________________________________________________ 答案:3SO2-3+2H++2NO-3===3SO2-4+2NO↑+H2O43. 亚硫酸氢钠溶液中滴加硫酸氢钠溶液:_______________________________________________________ 答案:HSO-3+H+===H2O+SO2↑44. Na2O2与H2O反应:_______________________________________________________ 答案:2Na2O2+2H2O===4Na++4OH-+O2↑45. 在强碱溶液中NaClO与Fe(OH)3反应生成Na2FeO4:_______________________________________________________ 答案:3ClO-+2Fe(OH)3+4OH-===2FeO2-4+3Cl-+5H2O46. 漂白粉溶液在空气中失效:_______________________________________________________ 答案:Ca2++2ClO-+CO2+H2O===CaCO3↓+2HClO47. 硅酸钠溶液与醋酸溶液混合:_______________________________________________________ 答案:SiO2-3+2CH3COOH===H2SiO3↓+2CH3COO-48. FeCl3溶液中滴入Na2S溶液:_______________________________________________________ 答案:2Fe3++S2-===2Fe2++S49. Fe2(SO4)3溶液中通入SO2气体:_______________________________________________________答案:2Fe3++SO2+2H2O===2Fe2++SO2-4+4H+50. 向NaHSO4溶液中滴入Ba(OH)2溶液至SO2-4沉淀完全:_______________________________________________________ 答案:H++SO2-4+Ba2++OH-===BaSO4↓+H2O。