GKFix MCQ Question

What is the hydroxide ion concentration in a 0.05 M ammonia solution if α = 0.018?

• A. 1.8 × 10^-2 M
• B. 9.4 × 10^-4 M
• C. 5.0 × 10^-3 M
• D. 1.0 × 10^-7 M