NEET UG CHEMISTRY MCQ: REDOX REACTIONS

1 Medium

1 of 1

Application +4 | -1

Moles of

{\mathrm{H}_2}{\mathrm{O}_2}

required for decolorizing 1 mole of acidified

\mathrm{KMn}{\mathrm{O}_4}

are :

View answer and explanation

Correct option: C

\frac{5}{2}

Option C (

\frac{5}{2}

) is correct because the balanced redox reaction requires 5 moles of H2O2 for every 2 moles of KMnO4, making the ratio 5/2.

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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}^ + }