What happens when hydrogen sulphide reacts with acidic solution of potassium dichromate?

Sulphur is formed

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Sulphur dioxide is formed

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Sulphur trioxide is formed

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All of the above.

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Solution

The correct option is A Sulphur is formed
Potassium dichromate oxidizes $H_{2} S$ to sulphur.
$K_{2} C r_{2} O_{7} + 4 H_{2} S O_{4} + 3 H_{2} S \to K_{2} S O_{4} + C r_{2} (S O_{4})_{3} + 7 H_{2} O + 3 S$

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