The Balanced Equation for the Solubility Equilibrium of Fe(OH)₂ Is

Multiple Choice

The balanced equation for the solubility equilibrium of Fe(OH) ₂ is shown below.What is the equilibrium constant expression for the K_sp of Fe(OH) ₂?
Fe(OH) ₂(s) ⇌ Fe²⁺(aq) + 2 OH^-(aq)

A) K_sp = {[Fe²⁺][OH^-]²}/{[Fe(OH) ₂][H₂O]}
B) K_sp = {[Fe²⁺][OH^-]²}/[Fe(OH) ₂]
C) K_sp = [Fe²⁺][OH^-]²
D) K_sp = 1/{[Fe²⁺][OH^-]²}