Sarthaks Test
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Given below are the two reactions of H2O2. Mark the correct statement which follows. 

(i) 2KMnO4+ 3H2SO4 + 5H2O2 K2SO4 + 2MnSO4 + 8H2O + 5O

(ii) 2Cr(OH)3 + 4NaOH + 3H2O2 2Na2CrO4 + 8H2O

a. (i) Shows oxidising nature of H2O2 and (ii) shows reducing nature of H2O

b. In (i) H2O2 acts as a reducing agent and in (ii) it acts an oxidizing agent. 

c. In both (i) and (ii), H2O2 acts as an oxidizing agent 

d. In both (i) and (ii), H2O2 acts as as a reducing agent.

1 Answer

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Best answer

Correct option  (b) In (i) H2O2 acts as a reducing agent and in (ii) it acts an oxidizing agent.

Explanation:

In (i) H2O2 reduces KMnO4 to MnSO4 and is oxidised to O2

In (ii) H2O2 oxidises Cr(OH)3 to Na2CrO4 and is reduced to H2O.

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