Ncert Exercises & Solutions

PCl₅ reacts with finely divided silver on heating and a white silver salt is obtained, which dissolves on adding excess aqueous NH₃ solution. Write the reactions involved to explain what happens.

PCl₅ on reaction with finely divided silver produced silver halide.

{PCI}_{5} + 2 Ag \to 2 AgCl + {PCl}_{3}

AgCl on further reaction with aqueous ammonia solution produces a soluble complex of

[Ag {({NH}_{3})}_{2}]^{+} {Cl}^{-}

AgCl + 2 {NH}_{3} (ag) \to \underset{Soluble complex}{[Ag {({NH}_{3})}_{2}]^{+}} {CI}^{-}

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