HARDMCQ SINGLEJEE Advanced ChemistryInorganic ChemistryHydrogenAchiever Section

Assertion: Anhydrous BaO2 (barium peroxide) is used for preparing H2O2. Reason: Hydrated BaO2 is not available.

A.A

B.B

C.C

D.D✓ Correct

Explanation

H2O2 is prepared by the action of dil. H2SO4 with hydrated barium peroxide (BaO2.8H2O). Anhydrous BaO2 is not used because its reaction is slow and ceases after some time due to formation of protective layer of precipitated BaSO4 on it, which in case of solution of BaO2.8H2O is filtered off frequently.

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