A) Enter the the Ksp expression for the solid AB2 in terms of the molar solubility x.
Express your answer in terms of x. For example: 7*x^2.
B)Enter the the Ksp expression forC2D3 in terms of the molar solubility x.
Express your answer in terms of x. For example: 6*x^2.
1 Answer

A)
AB2 <—> A2+ + 2B
Let x = moles/L AB2 that dissolve.
We get x moles/l A2+ and 2x moles/l B
x ( 2x)^2 = 4x^3
B)
C2D3 <—> 2 C3+ + 3D2
we get 2x C3+ and 3x D2
Ksp = [C3+]^2 [ D2]^3
= (2x)^2 (3x)^3 = 4x^2 . 27x^3 = 108 x^5