NaOH + Ca(HCO3)2 = CaCO3↓ + NaHCO3 + H2O
2NaOH + Ca(HCO3)2 = CaCO3↓+ Na2CO3 + 2H2O
Mg(HCO3)2 + 2NaOH = 2NaHCO3 + Mg(OH)2↓
Mg(HCO3)2 + 4NaOH = 2Na2CO3 + Mg(OH)2↓ + 2H2O
2NaHCO3+Ba(OH)2=BaCO3↓+Na2CO3+2H2O
NaHCO3+Ba(OH)2=BaCO3↓+NaOH+H2O
原理就是量少先考虑生成沉淀,最先生成更难溶解的沉淀,然后再H++OH-=H2O中和