沉淀重量法总要加过量沉淀剂！ MmAn(s)≥mMA+ OH B 、 0 M (OH) ML MB HA NA OA M(OH MBn IInA OAn [M]"[4][=(mS)"(C4)”]=Np[=KYa] M m 可见，其，Sy沉淀重量法总要加过量沉淀剂. mS nS+CACA [ '] [ '] [ ( ) ( ) ] ' [ ] n A m s p s p M n A m n m M A = mS C = K = K   m n A n M sp A C K m S   = 可见，其↗，S↘