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Explain the following with the help of balanced chemical equation : (a) Bleaching action of `SO_(2)`. Dehydration of formic acid by concentrated `H_(2)SO_(4)`. Burning of benzene in presence of excess of dioxygen . |
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Answer» (a) `SO_(2)` is used as bleaching agent in the presence of moisture. It bleaches due to reduction and bleaching action is temporary. `SO_(2)+2H_(2)OrarrH_(2)SO_(4)+2[H]` (b) `underset(("Formic acid"))(HCO OH) underset(("Dehydration"))overset(H_(2)SO_(4))rarr CO+H_(2)O` Conc. `H_(2)SO_(4)` is a powerful dehydrating agent. (c) Benzene burns in excess of dioxygen to form carbon dioxide and water. `C_(6)H_(6)+(15)/(2) O_(2) rarr 6CO_(2)+3H_(2)O` |
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