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Nitric Acid

When a mixtur...

Question

When a mixture of potassium dichromate and sodium chloride is heated with concentrated $H_{2} {S O}_{4}$ , orange-red vapors of chromyl chloride are formed.
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Solution

Chromyl chloride $C r O_{2} C l_{2}$ vapour is formed.
$K_{2} {C r}_{2} O_{7} + 4 N a C l + 6 H_{2} {S O}_{4} \to 2 C r O_{2} {C l}_{2} + 2 K H {S O}_{4} + 4 N a H {S O}_{4} + 3 H_{2} O$

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