Qc(浓度商)[Mn+]m[Nm-]n称之为离子积.将离子积与溶度积Ksp比较,可得：(1) [Mn+]m[Nm-]n > Ksp时,有MmNn沉淀析出,直到溶液的[Mn+]m[Nm-]n＝Ksp时为止；(2) [Mn+]m[Nm-]n＝Ksp时,溶液达到饱和；(3) [Mn+]m[Nm-]n < Ksp...