25 mL of 0.50 $M{{\rm{H}}_2}{{\rm{O}}_2}$ solution is added to 50 mL of 0.20 M $M{\rm{KMn}}{{\rm{O}}_4}$ in acidic solution. Which of the following statements is true?

0.005 mole of ${\rm{KMn}}{{\rm{O}}_4}$ are left

0.010 mole of oxygen is liberated

0.030 g atom of oxygen gas is evolved

0.0025 mole ${{\rm{H}}_2}{{\rm{O}}_2}$ does not react with ${\rm{KMn}}{{\rm{O}}_4}$

JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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Analyzing +4 | -1

25 mL of 0.50

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

solution is added to 50 mL of 0.20 M

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

in acidic solution. Which of the following statements is true?

View answer and explanation

Correct option: B

0.005 mole of

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

are left

The correct answer is B (0.005 mole of

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

are left) because the milliequivalents of

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

exceed those of

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

, leaving excess

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