JEE Main 2013 — Chemistry Physical Chemistry

2013mcqmedium

Consider the following reaction:

$x {\mathrm{MnO}}_{4}^{-}+y {C}_{2}{O}_{4}^{2-}+{\mathrm{zH}}^{+}\longrightarrow x {\mathrm{Mn}}^{2+}+2y {\mathrm{CO}}_{2}+\frac{z}{2}{H}_{2}O$

The values of x, y and z in the reaction are, respectively:

Official previous-year question

Held on 7 Apr 2013 · Verified 6 Jul 2026.

Options

A
$2,5\mathrm{and}16$
B
$5,2\mathrm{and}8$
C
$5,2\mathrm{and}16$
D
$2,5\mathrm{and}8$

Did you get this right?

Solution

$\begin{matrix} {\text{C}}_{2} {\text{O}}_{4}^{ 2 - } & \longrightarrow & 2 {\text{CO}}_{2} + 2 {\text{e}}^{-} ] \times 5 \\ {\text{MnO}}_{4}^{-} + 8 {\text{H}}^{+} + 5 {\text{e}}^{-} & \longrightarrow & {\text{Mn}}^{ 2 + } + 4 {\text{H}}_{2} \text{O} ] \times 2 \end{matrix}$

$\begin{matrix} 2 {\text{MnO}}_{4}^{-} + 1 6 {\text{H}}^{+} + 5 {\text{C}}_{2} {\text{O}}_{4}^{ 2 - } & \longrightarrow \end{matrix} 1 0 {\text{CO}}_{2} + 2 {\text{Mn}}^{ 2 + } + 8 {\text{H}}_{2} \text{O}$

${\text{MnO}}_{4}^{-} \Rightarrow \text{x} = 2$

${\text{C}}_{2} {\text{O}}_{4}^{ 2 - } \Rightarrow \text{y} = 5$

${\text{H}}^{+} \Rightarrow \text{z} = 1 6$

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JEE Main Physical Chemistry in other years

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JEE Main 2013 — Chemistry Physical Chemistry

2013mcqmedium

Consider the following reaction:

$x {\mathrm{MnO}}_{4}^{-}+y {C}_{2}{O}_{4}^{2-}+{\mathrm{zH}}^{+}\longrightarrow x {\mathrm{Mn}}^{2+}+2y {\mathrm{CO}}_{2}+\frac{z}{2}{H}_{2}O$

The values of x, y and z in the reaction are, respectively:

Official previous-year question

Held on 7 Apr 2013 · Verified 6 Jul 2026.

Options

A
$2,5\mathrm{and}16$
B
$5,2\mathrm{and}8$
C
$5,2\mathrm{and}16$
D
$2,5\mathrm{and}8$

Did you get this right?

Solution

${\text{MnO}}_{4}^{-} \Rightarrow \text{x} = 2$

${\text{C}}_{2} {\text{O}}_{4}^{ 2 - } \Rightarrow \text{y} = 5$

${\text{H}}^{+} \Rightarrow \text{z} = 1 6$

Your note

JEE Main Physical Chemistry in other years

Keep practicing Physical Chemistry

Work through every JEE Main Physical Chemistry PYQ, year by year.

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JEE Main 2013 — Chemistry Physical Chemistry

Options

Did you get this right?

Solution

Your note

JEE Main Physical Chemistry in other years

More JEE Main Physical Chemistry questions

Other Chemistry topics for JEE Main

Organic Chemistry

Inorganic Chemistry

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JEE Main 2013 — Chemistry Physical Chemistry

Options

Did you get this right?

Solution

Your note

JEE Main Physical Chemistry in other years

More JEE Main Physical Chemistry questions

Other Chemistry topics for JEE Main

Organic Chemistry

Inorganic Chemistry

Keep practicing Physical Chemistry