`H_2S` gas cannot be dried over conc.`H_2SO_4` because
A. the acid oxidises it
B. the acid combines with `H_2S` to form a salt
C. both forms a complex
D. `H_2SO_4` is not a drying agent.

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1 Answers

Correct Answer - A
`H_2SO_4` oxidises `H_2S` gas
`H_2S + H_2SO_4 to 2H_2O + SO_2 +S`

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