●沉澱反應的平衡常數

AgI(s) → Ag(+) + I(-)
Ksp(AgI) = [Ag+][I-] = 8.52 x 10^-17

AgCl(s) → Ag(+) + Cl(-)
Ksp(AgCl) = [Ag+][Cl-] = 1.77 x 10^-10

AgI(s)+Cl﹣→AgCl(s)+I–
平衡常數K = ([AgCl]*[I-])/([AgI]*[Cl-]) = [I-]/[Cl-]
Ksp(AgI)/Ksp(AgCl) = [Ag+][I-]/[Ag+][Cl-]
= (8.52 x 10^-17)/(1.77 x 10^-10) = 4.81 x 10^-7

如果不用溶度積怎麼列算式呢?

應該需要溶解度積