专题五 电解质溶液中的离子平衡,第25讲 盐类的水解,课前8min,栏 目 导 航,考点透视,质量验收,课前8min,D,B,C,考点透视,H,OH,弱电解质,正,吸热,不产生,不产生,酸,碱,中,电离程度,水解程度,CH3COOHOH,NH3H2OH,Fe(OH)33H,Al(OH)33H,4Al(OH)3,大,强,促进,促进,CH3COOHOH= CH3COOH2O,lgK11.2，pK11.2,lgK12，pK12,lgK24.2，pK24.2,lgK27.1，pK27.1,同理lgK312.2，pK3 12.2,lgK(CH3COOH),4.76，pK4.76,D,B,D,B,C,c(CH3COOH)c(H)c(CH3COO)c(OH),c(K)c(CH3COO)c(OH)c(H),c(Na)2c(S2)c(HS)c(H2S),B,c(NH )c(Cl)c(NH3H2O)c(OH)c(H),c(HCN) c(Na)c(CN)c(OH)c(H),2c(Na)c(CN)c(HCN),D,c(Na)c(CH3COO)c(OH)c(H),c(CH3COO)c(Na)c(H)c(OH),c(CH3COO)c(OH)c(Na)c(H),2c(Na)c(CH3COO)c(CH3COOH),B,B,B,D,D,D,C,C,D,C,热,MgCO3、MgO或Mg(OH)2,CuCO3或Cu(OH)2,盐酸,HCl,生成红褐色沉淀,Fe2O3,浓盐酸,MgCO3与Fe3水解产,生的H反应，促进了Fe3水解，使Fe3转化为Fe(OH)3沉淀而除去,D,质量验收,D,B,A,B,