InterviewSolution
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InterviewSolution
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write chemical reactions to justify that hydrogen peroxide can function as on oxidising as well as reducing agent. |
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Answer» `H_(2)O_(2)` can act as an oxidising as well as a reducing agent both in acidic and basic media as illustrated below : (i) Oxidising agent in acidic medium `2Fe^(2+) (aq) + 2H^(+)(aq) + H_(2)O_(2)(aq) to 2Fe^(3+)(aq) + 2H_(2)O(l)` (ii) Oxidising agent in basic medium `Mn^(2+)(aq) + H_(2)O_(2)(aq) + 2OH^(-)(aq) to underset("Manganese dioxide")(MnO_(2)(s)) + 2H_(2)O(l)` (iii) Reducing agent in acidic medium `2MnO_(4)^(-) (aq) + 6H^(+)(aq) + 5H_(2)O_(2) (aq) to 2Mn^(2+) (aq) + 8 H_(2)O(l) + 5O_(2)(g)` (iv) Reducing agent in basic medium `I_(2)(s) + H_(2)O_(2) (aq) + 2OH^(-)(aq) to 2I^(-)(aq) +2H_(2)O(l)+ O_(2)(g)` |
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