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Question
What happens when conc. sulphuric acid is added to sulphides? Explain using a suitable reaction.
Explain
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Solution
It reacts as a non-volatile acid to decompose metal sulphides, releasing hydrogen sulphide (H2S) gas.
\[\ce{FeS + H2SO4 (conc.) -> FeSO4 + H2S ^}\]
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Chapter 11: Study of Compounds: Sulphuric Acid - EXERCISE [Page 223]
