Answer to Question #74884 in Organic Chemistry for leul

Question

if the transformation from AgC03 to Ag2Cro4 is complete in a solution, how much should be the value of [cr04^2-]/[CO3^2-] at least?
Ksp(Ag2Cr04)=1.1X10^-12
Ksp(Ag2CO3)=8.1X10^-12

Answer 1

Solution
Ksp(Ag 2 CrO 4 )= [Ag + ] 2 [CrO 4 2- ]
Ksp(Ag 2 CO 3 )= [Ag + ] 2 [CO 3 2- ]
Ksp(Ag 2 CrO 4 )/ Ksp(Ag 2 CO 3 )= [CrO 4 2- ]/[CO 3 2- ]
[CrO 4 2- ]/[CO 3 2- ] = 1.1·10 -12 /8.1·10 -12 = 0.1358

Answer
[CrO 4 2- ]/[CO 3 2- ] = 0.1358