Which of the following coordination compounds will give precipitate with an aqueous solution of $A g N O_{3} ?$

[C r (N H_{3})_{6}] C l_{3}

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[C r (N H_{3})_{3}] C l_{3}

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[C r (N H_{3})_{4}] S O_{4}

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N a_{3} [C r (C N)_{6}]

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Solution

The correct option is A $[C r (N H_{3})_{6}] C l_{3}$
With an aqueous solution of $A g N O_{3},$ hexammine chromium (III) chloride, i.e, $[C r (N H_{3})_{6}] C l_{3}$ gives a precipitate of $A g C l$ confirming the presence of $C l^{-}$ ions.

$[C r (N H_{3})_{6} C l_{3} + 3 A g N O_{3} \to [C r (N H_{3})_{6}] (N O_{3})_{3} + 3 A g C l$

Hence, option $A$ is correct.

Suggest Corrections

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