The Hydroxide Ion Concentration of a Saturated Solution of Fe(OH)₂ $1.16 \times 10 ^ { - 5 }$

Multiple Choice

The hydroxide ion concentration of a saturated solution of Fe(OH) ₂ is $1.16 \times 10 ^ { - 5 }$ M. What is the solubility product constant for Fe(OH) ₂?

A) $7.9 \times 10 ^ { - 16 }$
B) $6.32 \times 10 ^ { - 15 }$
C) $1.58 \times 10 ^ { - 15 }$
D) $3.41 \times 10 ^ { - 3 }$
E) $2.27 \times 10 ^ { - 2 }$