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Q.

In which of the following reactions H2O2 is a reducing agent ?

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a

2FeCl2 + 2HCl  +  H2O2    2FeCl2 + H2O

b

Cl2 + H2O2    2HCl + O2

c

2HI + H2O2    2H2O + I2

d

H2SO3 + H2O2    H2SO4 + H2O

answer is B.

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Detailed Solution

Cl20 + H2O2    2HCl -1+ O2.  In this reaction chlorine is reduced from zero to - 1 oxidation state.

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In which of the following reactions H2O2 is a reducing agent ?