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20 April, 20:40

What element is being oxidized in the following redox reaction?

H2O2 (l) + ClO2 (aq) → ClO2 (aq) + O2 (g)

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  1. 20 April, 23:04
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    The O is being oxidized, but at the same time, is being reducted.

    Explanation:

    H₂O₂ (l) + ClO₂ (aq) → ClO₂ (aq) + O₂ (g)

    In this reaction, we have 4 compounds:

    Hydrogen peroxide

    Chlorine dioxide (twice)

    Oxygen

    In both dioxide, the Cl acts with + 4 in oxidation state; the oxygen acts with - 2.

    Oxgen in ground state has 0, as oxidation number.

    In peroxide, the H acts with + 1 but the oxygen acts with - 1.

    Peroxide is making the oxidation number from the O in the ClO₂, to decrease (reduction) and to increase in the O, at the ground state.

    Hydrogen peroxide is a good reducing and oxidizing agent at the same time.
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