Question

Determine the concentration of NH₃ solution whose one litre can dissolve 0.10 mol of AgCl. K_sp(AgCl) and K_{f[Ag(NH3)2]⁺} are 10^–9 M² and 1.6 × 10⁶ M^–2 respectively.

Answer 1

Thus, [NH₃] at equilibrium = 2.5 M 

Also 0.2 M of NH₃ must have been used to dissolve 0.1 M AgCl

[NH₃]_Total = 2.5 + 0.2 = 2.7 M