NH4Cl+H2O NH3•H2O+HCl NH4++H2O H++NH3•H2O
FeCl3+3H2O Fe(OH)3+3HCl Fe3++3H2O Fe(OH)3+3H+
AlCl3+3H2O Al(OH)3+3HCl Al3++3H2O Al(OH)3+3H+
CuSO4+2H2O Cu(OH)2+H2SO4 (金属活动顺序表中Mg2+以后的阳离子均水解)
NaHCO3+H2O H2CO3+NaOH (NaHSO4不水解，NaHSO3电离大于水解)
Na2CO3+H2O NaHCO3+NaOH CO32-+H2O HCO3-+OH?
NaHCO3+H2O H2CO3+NaOH(第一步远远大于第二步，二步不能叠加)
Na2SO3+H2O NaHSO3+NaOH SO32-+H2O HSO3-+OH?
NaHSO3+H2O H2SO3+NaOH(第一步远远大于第二步，二步不能叠加)
HSO3-+H2O H2SO3+OH-
Na2S+H2O NaHS+NaOH S2-+H2O HS-+OH?
NaHS+H2O H2S+NaOH(第一步远远大于第二步，二步不能叠加)
HS-+H2O H2S+OH-
Na3PO4+H2O Na2HPO4+NaOH PO43-+H2O HPO42-+OH?
Na2HPO4+H2O NaH2PO4+NaOH HPO42-+H2O H2PO4-+OH?
NaH2PO4+H2O H3PO4+NaOH H2PO4-+H2O H3PO4+OH?
CH3COONa+H2O CH3COOH+NaOH CH3COO-+H2O CH3COOH+OH?
C6H5ONa+H2O C6H5OH+NaOH C6H5O-+H2O C6H5OH+OH?
2、双水解
CH3COONH4+H2O CH3COOH+NH3•H2O
NH4F+H2O HF+NH3•H2O
Al2S3+6H2O==Al(OH)3↓+H2S↑ (隔绝空气，密封保存)
Mg3N2+6H2O==Mg(OH)2↓+NH3↑(隔绝空气，密封保存)
Na3P+3H2O==3NaOH+PH3↑(隔绝空气，密封保存)
Zn3P2+6H2O==Zn(OH)2↓+PH3↑(Zn3P2一种老鼠药，PH3剧毒神经毒剂)
CaC2+2H2O==Ca(OH)3↓+C2H2↑(隔绝空气，密封保存)
C2H5ONa+H2O==C2H5OH+NaOH
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