化学方程式：CH3COOH + NH3.H3O == CH3COONH4 + H2O
离子方程式：CH3COOH + NH3.H2O == CH3COO- + NH4+
要注意CH3COOH和NH3.H2O都是弱电解质,所以写离子方程式时不能拆.
CH3COONH4是强电解质,要拆.