Question

The oxidation states of the most electronegative element in the products of the reaction of BaO₂ with dil. H₂SO₄ are

(a) 0 and -1

(b) -1 and -2

(c) -2 and 0

(d) -2 and +1

Answer 1

Correct option is (b) -1 and -2

BaO₂ + H₂SO₄ → BaSO₄ + H₂O₂

The most electronegative element in the product is oxygen.

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