We’re being asked to calculate the solubility of Silver Chloride (AgCl) in 0.160 M NH3. The presence of NH3 would increase the solubility of AgCl because Ag+ would be consumed to form Ag(NH3)2+(aq).
There are two reactions involved:
AgCl (s) ⇌ Ag+(aq) + Cl- (aq)
Ksp = [Ag+][Cl-] = 1.6x10-10 (you can get the Ksp value in books or the internet)
Ag+(aq) + 2 NH3 (aq) ⇌ Ag(NH3)2+ (aq) A coefficient of 2 is added to NH3 to balance the reaction.
(you can get the Kf value in books or the internet)
Calculate the solubility of silver chloride in a solution that is 0.160 M in NH3 (initial concentration).
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What scientific concept do you need to know in order to solve this problem?
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