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Question

The oxidation state of the most electronegative element in the products of the reaction between BaO2 and H2SO4 are:

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

The correct option is A 1 and 2
BaO2+H2SO4BaSO4+H2O2

The most electronegative element in the product is oxygen.

The oxidation state of oxygen in BaSO4 is -2 and in H2O2 is -1.

Note: Oxidation state of hydrogen is always +1 so in H2O2 oxidation of oxygen is -1 instead of -2.

Hence, the correct option is B

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