JEE Main On 8 April 2017 Question 26

Question: In which of the following reactions, hydrogen peroxide acts as an oxidizing agent? [JEE Online 08-04-2017]

Options:

A) $ HOCl+H _2O _2\to H _3{O^{+}}+C{l^{-}}+O _2 $

B) $ I _2+H _2O _2+2O{H^{-}}\to 2{I^{-}}+2H _2O+O _2 $

C) $ PbS+4H _2O _2\to PbSO _4+4H _2O $

D) $ 2MnO_4^{-}+3H _2O _2\to 2MnO _2+3O _2+2H _2O+2O{H^{-}} $

Show Answer

Answer:

Correct Answer: C

Solution:

  • $ \underset{+2}{\mathop{PbS+}},4H _2O _2\xrightarrow[{}]{{}}\underset{+4}{\mathop{PbSO _4}},+4H _2O $