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Question

The oxidation states of most electronegative elements in the products obtained from the reaction between BaO2 and dil. H2SO4 are:

A
0,1
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B
1,2
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C
2,0
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D
2,+1
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Solution

The correct option is D 1,2
The reaction between BaO2 and dil. H2SO4:

BaO2+H2SO4H2O2+BaSO4

So, the products are H2O2 and BaSO4. The most electronegative element in these two products is oxygen (in both cases).

Thus, the oxidation states are 1 in H2O2 and 2 in BaSO4 respectively in each product.

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