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प्रश्न
What is the action of KMnO4 in an acidic medium on the following?
H2S
Write a balanced equation.
अति संक्षिप्त उत्तर
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उत्तर
When KMnO4 reacts with H2S in an acidic medium, it oxidises hydrogen sulphide to sulphur, and itself gets reduced to Mn2+, forming a yellow precipitate of sulphur.
\[\ce{2MnO^-_4 + 5H2S + 6H+ -> 2Mn^{2+} + 5S(\downarrow) + 8H2O}\]
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