NEET UG CHEMISTRY MCQ: REDOX REACTIONS

1 Easy

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Application +4 | -1

The oxidation state of oxygen atom in potassium superoxide is

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Correct option: B

- \frac{1}{2}

Option B (-1/2) is correct because in potassium superoxide (

KO_2

), potassium has a +1 oxidation state, and the two oxygen atoms share a -1 charge, resulting in each oxygen having an oxidation state of -1/2.

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{I_2}

\mathrm{MnO}_4^ - + {\mathrm{C}_2}\mathrm{O}_4^{2 - } + {\mathrm{H}^ + } \to \mathrm{M}{\mathrm{n}^{2 + }} + \mathrm{C}{\mathrm{O}_2} + {\mathrm{H}_2}\mathrm{O}

\mathrm{MnO}_4^ -

{\mathrm{C}_2}\mathrm{O}_4^{2 - }

{\mathrm{H}^ + }