2013高中化学真题
选择d
A.CO32-的水解分为两步:
CO3 2- +H2O ==可逆==HCO3- +OH-，HCO3- +H2O ==可逆==H2CO3 +OH-
B.向AgNO3溶液中加入过量的氨水会形成银氨溶液:
银++ 2氨H2O = =[银(氨)2]+ +2H2O
C.电解氯化镁溶液:
Mg2 ++ 2Cl-+2H2O = = Mg(OH)2↓+Cl2 ↑+ H2↑
A.CO32-的水解分为两步:
CO3 2- +H2O ==可逆==HCO3- +OH-，HCO3- +H2O ==可逆==H2CO3 +OH-
B.向AgNO3溶液中加入过量的氨水会形成银氨溶液:
银++ 2氨H2O = =[银(氨)2]+ +2H2O
C.电解氯化镁溶液:
Mg2 ++ 2Cl-+2H2O = = Mg(OH)2↓+Cl2 ↑+ H2↑