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PCl_{5} reacts with finely divided silver on heating and a white silver salt is obtained, which dissolves on adding excess aqueous NH_{3} solution. Write the reactions involved to explain what happens.

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PCl_{5} reacts with finely divided silver on heating to form white silver salt (AgCl). This dissolves on addition of excess aqueous ammonia to form soluble complex.

PCl_{5}+2Ag\rightarrow 2AgCl+PCl_{3}

AgCl+2NH _3(aq)\rightarrow [Ag(NH_3 )_ 2]+Cl ^{-}

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