Hydrogen peroxide is a powerful oxidising agent. It is an electron acceptor in acidic and alkaline mediums . H_(2)O_(2) + 2H^(+) + 2e^(-) rarr H_(2)O (in acidic medium ) H_(2)O_(2) + 2e^(-) rarr 2OH^(-) (in alkaline medium) It can also act as reducing agent towards powerful oxidising agents . H_(2)O_(2) rarr 2H^(+) + O_(2) + 2e In alkaline medium , however , its reducing nature is more effective . H_(2)O_(2) + 2OH^(-) rarr 2H_(2)O + O_(2) + 2e^(-) In which of the following reactions , H_(2)O_(2) acts as an oxidising agent ?

Hydrogen peroxide is a powerful oxidising agent. It is an electron ac

1.	Hydrogen peroxide is a powerful oxidising agent. It is an electron acceptor in acidic and alkaline mediums . H_(2)O_(2) + 2H^(+) + 2e^(-) rarr H_(2)O (in acidic medium ) H_(2)O_(2) + 2e^(-) rarr 2OH^(-) (in alkaline medium) It can also act as reducing agent towards powerful oxidising agents . H_(2)O_(2) rarr 2H^(+) + O_(2) + 2e In alkaline medium , however , its reducing nature is more effective . H_(2)O_(2) + 2OH^(-) rarr 2H_(2)O + O_(2) + 2e^(-) In which of the following reactions , H_(2)O_(2) acts as an oxidising agent ?
Answer» `IO_(4)^(-) + H_(2)O_(2) rarr IO_(3)^(-) + H_(2)O + O_(2)` `2I^(-) + H_(2)O_(2) + 2H^(+) rarr I_(2) + 2H_(2)O` `Ag_(2)O + H_(2)O_(2) rarr 2Ag + H_(2)O + O_(2)` `2MnO_(4)^(-) + 6H^(+) + 5H_(2)O_(2) rarr 2Mn^(2+) + 8H_(2)O + 5O_(2)` Answer :B