Question

The [H₃O⁺] of a 0.15 M solution of NH₄Cl in H₂O at 25°C is (K_b for NH₃ = 1.8 × 10^–5):

a) 3.6 × 10^–3 M

b) 4.9 × 10^–5 M

c) 9.1 × 10^–6 M

d) 8.2 × 10^–10 M

Answer 1

c) 9.1 × 10^–6 M