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Question

Which substance cannot be reduced by H2O2


A

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B

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C

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D

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Solution

The correct option is D


Fe+2 salts are converted to ferric salts by action of hydrogen peroxide where H2O2 acts as an oxidising agent.

2Fe2+ -->2Fe3+ +2e-
H2O2 +2H+ +2H -->2H2O
-------------------------------------------------
2Fe2+ + H2O2 + 2H+ --> 2Fe3+ + 2H2O


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