The correct mathematical expression for finding the molar solubility (s)of Sn(OH)₂ is: A)2s² = K_sp B)2s³ = K_sp C)108s⁵ = K_sp D)4s³ = K_sp E)8s³ = K_sp

Question

Quizplus · Accepted Answer

The correct expression for finding the molar solubility (s) of Sn(OH)2 is:
Sn(OH)2 ⇌ Sn2+ + 2OH- 
The equilibrium constant expression for the above reaction is:
Ksp = [Sn2+] [OH-]2 = 4s(s)^2 = 4s^3
Solving for s:
s = (Ksp/4)^(1/3)
Substituting Ksp value for Sn(OH)2:
Ksp = 3.0 × 10^-28 = (s)^3(2s) -> s = 8.24 x 10^-9 M
Therefore, the correct mathematical expression is
4s^3 = 3.0 × 10^-28 -> s = 8.24 x 10^-9 M
which is choice D.

The Correct Mathematical Expression for Finding the Molar Solubility (S)of