Silver Bromide, AgBr, Is More Soluble in Ammonia Solution Than

Multiple Choice

Silver bromide, AgBr, is more soluble in ammonia solution than in pure water. The reaction is, AgBr(s) + 2 NH₃(aq) Ag(NH₃) ₂⁺ + Br^-(aq) Using K_sp(AgBr) = 5.0 × 10^-13 and K_form (Ag(NH₃) ₂⁺) = 1.60 × 10⁷, calculate the solubility of AgBr in 0.800 M ammonia solution..Hint: Combine the formation and solubility reactions to find the overall reaction and its equilibrium constant, and make sure to account for the presence of a common ion.

A) 1.6 × 10^-3 M
B) 2.3 × 10^-3 M
C) 2.8 × 10^-3 M
D) 4.2 × 10^-3 M
E) 6.1 × 10^-2 M