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Potassium Dichromate

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Question

What happens when $K_{2} C r_{2} O_{7}$ is treated with $H_{2} S O_{4}$ and $N a C l$ solution?

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Solution

When $K_{2} {C r}_{2} O_{7}$ is treated with $H_{2} S O_{4}$ and $N a C l$ solution, red fumes of chromyl chloride $(C r O_{2} {C l}_{2})$ evolves.
$K_{2} {C r}_{2} O_{7} + 4 N a C l + 3 H_{2} S O_{4} ⟶ 2 C r O_{2} {C l}_{2} (Orange red) + K_{2} S O_{4} + 2 {N a}_{2} S O_{4} + 3 H_{2} O$

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Similar questions

Q. (i) What happens when zinc granules are treated with dilute solution of

H_{2} S O_{4}

? Also write the chemical equations if reaction occurs.

(ii) What happens when zinc granules are treated with dilute solution of HCl? Also write the chemical equations if reaction occurs.

(iii) What happens when zinc granules are treated with dilute solution of

H N O_{3}

? Also write the chemical equations if reaction occurs.

(iv) What happens when zinc granules are treated with dilute solution of NaCl? Also write the chemical equations if reaction occurs.

(v) What happens when zinc granules are treated with dilute solution of NaOH? Also write the chemical equations if reaction occurs.

Q. What happens when

C {C l}_{4}

is treated with

A g {N O}_{3}

What happens when HCl is treated with an aqueous solution of

A g N O_{3}

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