JEE CHEMISTRY MCQ: REDOX REACTIONS

1 Medium

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Application +4 | -1

Consider the following reaction,

xMnO_4^ - + y{C_2}O_4^{2 - } + z{H^ + } \to xM{n^{2 + }} + 2yC{O_2} + \frac{z}{2}{H_2}O

The values of

x

y

and

z

in the reaction are respectively

View answer and explanation

Correct option: C

2, 5 and 16

Option C (2, 5 and 16) is correct because balancing the redox reaction using the half-reaction method yields these stoichiometric coefficients.

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\mathrm{H}

2 \mathrm{KClO}_3 \longrightarrow 2 \mathrm{KCl}+3 \mathrm{O}_2

\mathrm{HNO}_3

\mathrm{HNO}_3

\mathrm{MnO}_4^{-}(\mathrm{aq})+\mathrm{Br}^{-}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O} \longrightarrow 2 \mathrm{MnO}_2(\mathrm{aq})+\mathrm{BrO}_3^{-}(\mathrm{aq})+2 \mathrm{OH}^{-}(\mathrm{aq})

\mathrm{Br}

-1

+5.