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Anhydrous BaO(2) is not used for prepari...

Anhydrous `BaO_(2)` is not used for preparing `H_(2)O_(2)` . Why ?

Text Solution

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Anhydrous `BaO_(2)` is not used because the `BaSO_(4)` formed during the reaction forms a protective layer around unreacted `BaO_(2)` and the reaction stops some time.
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