2.活度积和溶度积 auarksp=K.So=dvar aMA(水) So 三活度积K=avar 注:T一定,K为常数 :Ksp=auar=M4Y →溶度积KP三 K -=[M]-[A] 2. 活度积和溶度积 + − + − + − = = = = S P M A M A MA M A K K S a a S a a a a a K 0 0 0 (水) = + − SP M A K a a 活度积 0 注:T一定,KSP 0 为常数 = + − = + − + − SP M A M A K a a [M ] [A ] 0 [ ] [ ] 0 + − = = + − M A K K M A S P S P 溶度积