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The reaction of aqueus `KMnO_(4)` with `H_(2)O_(2)` in acidic conditions givesA. `Mn^(4+)` and `O_(2)`B. `Mn^(2+)` and `O_(2)`C. `Mn^(2+)` and `O_(3)`D. `Mn^(4+)` and `MnO_(2)` |
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Answer» Correct Answer - B In acidic medium `KMnO_(4)` is reduced to manganaous ion `(Mn^(2+))` while `H_(2)O_(2)` is oxidized to `O_(2)` : `{:(2KMnO_(4)+3H_(2)SO_(4)rarrK_(2)SO_(4)+2MnSO_(4)+3H_(2)O+5[O]),(" "H_(2)O_(2)+[O]rarrH_(2)O+[O_(2)]xx5),(bar(2KMnO_(4)+3H_(2)SO_(4)+5H_(2)O_(2)rarrK_(2)SO_(4)+2MnSO_(4)+H_(2)O+5O_(2))):}` or `2MnO_(4)^(-) + 5H_(2)O_(2) + 6H^(+) rarr 2Mn^(2+) + 8H_(2)O + 5O_(2)` |
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