HARDMCQ SINGLENEET 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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