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  4. Silver chloride dissolves in excess of ammonium hydroxide solution. The cation present in the resulting solution is

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Q. Silver chloride dissolves in excess of ammonium hydroxide solution. The cation present in the resulting solution is

WBJEEWBJEE 2018Coordination Compounds

Solution:

Silver chloride dissolves in excess of ammonium hydroxide solution. The cation present in the resulting solution is $\left[ Ag \left( NH _{3}\right)_{2}\right]^{+}$

In aqueous solution, silver chloride exist as $Ag ^{+}$ and $Cl ^{-} Ag ^{+}$ present in solution reacts with $NH _{3}$ to form $\left[ Ag \left( NH _{3}\right)_{2}\right]^{+}$.

$Ag ^{+} Cl ^{-}+2 NH _{3} \longrightarrow \left[ Ag \left( NH _{3}\right)_{2}\right]^{+} Cl ^{-}$