5-11 Describe strong and weak bases

5-11-1. Which of the following best represents the dissolution of gaseous ammonia (NH₃) in water?
A. NH₃(g) → NH₃(aq)
B. NH₃(g) + H₂O(l) → NH₄⁺(aq) + OH^-(aq)
C. NH₃(g) + H₂O(l) → NH₄OH(aq)
D. NH₃(aq) + H₂O(l) → NH₄⁺(aq) + OH^-(aq)

5-11-2. Which of the following is a weak base?
A. NaOH, B. Mg(OH)₂, C. K₂O, D. NH₃