Solubility of Silver Chloride
Two clear and colorless solutions are combined and a white precipitate appears. Aqueous ammonia is added and the precipitate is dissolved.
The solubility of AgCl in aqueous ammonia is determined by the product of the 'solubility product' of AgCl and the 'formation constant' of Ag(NH3+). This product is only 0.0027. 1.0 M ammonia will only 'hold”' 0.047 M Ag+ in the presence of AgCl precipitate (when there is no excess chloride).