In which of the following reactions H_(2)O_(2) does not act as a reduc

1.	In which of the following reactions H_(2)O_(2) does not act as a reducing agent ?
Answer» `I_(2)+H_(2)O_(2)+2OH^(-)to2I^(-)+2H_(2)O+O_(2)` `PbS+4H_(2)O_(2)toPbSO_(4)+4H_(2)O` `2KMnO_(4)+3H_(2)O_(2)to2MnO_(2)+2KOH+2H_(2)O+3O_(2)` `HOCl+H_(2)O_(2)toH_(3)O^(+)+CL^(-)+O_(2)` Solution :(i) In reaction (A), ( C) and (D), `H_(2)O_(2)` is converted into `O_(2)`. `thereforeH_(2)O_(2)` is reducing agent. (ii) In reaction (B) `H_(2)O_(2)` is converted to `H_(2)O`. Here reduction of `H_(2)O_(2)` occurs to `H_(2)OandH_(2)O_(2)` is an oxidising agnet.

Discussion