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When a mixture of solid NaCI, solid $K_{2} {Cr}_{2} O_{7}$ is heated with conc $H_{2} {SO}_{4}$ orange red vapours are obtained of the compound

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Chromous chloride

Chromyl chloride

Chromic chloride

Chromic sulphate

answer is B.

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Detailed Solution

$\begin{array}{l} NaCl + H_{2} {SO}_{4} \to {NaHSO}_{4} + HCl \\ K_{2} {Cr}_{2} O_{7} + 2 H_{2} {SO}_{4} \to 2 {KHSO}_{4} + 2 {CrO}_{3} + H_{2} O \end{array}$
${CrO}_{3} + 2 HCl \to \underset{(orange red vapour)}{{CrO}_{2} {Cl}_{2}}$

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