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Question
Why is \[\ce{H2SO4}\] is not used as a drying agent for \[\ce{H2S}\]?
Solution
Sulphuric acid is not used as a drying agent for \[\ce{H2S}\] because it reacts with \[\ce{H2S}\] to form sulphur.
\[\ce{H2SO4 + H2S -> 2H2O + SO2 + S↓}\]
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