Question

Why is AgI insoluble in aqueous NH3?

Answer 1

Answer:

AgI bond is a covalent bond and it is stronger as silver cation and iodide anion are almost identical in size, so there is better size match silver iodide precipitates from solution as a canary-yellow powder.

Additionally,  iodine acid and silver base both are weak. Weak acid reacts with weak base to produce salt withn has poor dissociation constant.

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