两者反应有量的问题.Ca(HCO 3 ) 2 溶液与过量的NaOH溶液反应2OH – + 2 HCO 3 – + Ca 2+ = CaCO 3 ↓ + 2H 2 O+CO32- Ca(HCO 3 ) 2 溶液与少量的NaOH溶液反应OH – + HCO 3 – + Ca 2+ = CaCO 3 ↓ + H 2 O...