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Ag 2 CrO 4 br...

Question

${A g}_{2} {C r O}_{4}$ (brick red ppt) is soluble in :

dil.

{H N O}_{3}

{a q . N H}_{3}

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dil.

H C l

{a q . N H}_{3}

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dil.

{H N O}_{3}

or dil.

H C l

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H_{2} O

or dil.

{H N O}_{3}

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Solution

The correct option is A dil. ${H N O}_{3}$ or ${a q . N H}_{3}$
${A g}_{2} {C r O}_{4}$ (brick red ppt) is soluble in dil. ${H N O}_{3}$ or ${a q . N H}_{3}$
In dil nitric acid, it forms soluble silver dichromate
In aq. ammonia, it forms soluble complex $[A g (N H_{3})_{2}] C r O_{4}$

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