Agcl dissolves in aqoues ammonia and not in water because,

Answer 1

AgCl (aq) ⇔ Ag⁺ (aq) + Cl^- (aq)

AgCl has a solubility product constant value (Ksp) of 1.8 x 10-10. Since this Ksp value < 1, this indicates that the equilibrium reaction for the dissociation of AgCl favors the reactant side. As a result, AgCl has a very low solubility in water.

On the other hand, when aqueous ammonia is added to AgCl, an aqueous silver-ammonia complex ion (Ag(NH₃)₂⁺) is formed. The reaction is:

Ag⁺ (aq) + 2 NH₃ (aq) ⇔ Ag(NH₃)₂⁺ (aq)

The formation constant (Ksp) for this silver-ammonia complex is 1.7 x 10⁷. Since this Ksp value is > 1, this indicates that the equilibrium reaction favors the product side. Hence, Ag is more soluble in aqueous ammonia.