`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.

Explanation

`PCl_(5)` reacts with finely divided silver on heating to form white silver chloride which dissolves in aqueous `NH_(3)` to form diamminesilver (I) chloride complex.
`{:(" "2 Ag + PCl_(5) rarr 2AgCl + PCl_(3)),(AgCl + 2NH_(3)(aq) rarr underset("Diamminesilver (I) chloride")([Ag(NH_(3))_(2)]^(+)Cl^(-))):}`