GKFix MCQ Question

What is the expression for the ionization constant of a weak base (Kb)?

• A. Kb = [B]/[BH+][OH⁻]
• B. Kb = [BH+][OH⁻]/[B]
• C. Kb = [OH⁻]/[BH+][B]
• D. Kb = [BH+]/[OH⁻][B]