1 mole of $\mathrm{Fe}\left(\mathrm{NO}_2\right)_2$ is oxidised into $\mathrm{Fe}^{3+}$ and $\mathrm{NO}_3^{-}$ by $\mathrm{x}$ mole of $\mathrm{Cr}_2 \mathrm{O}_7^{2-}$ in acidic medium, $\mathrm{x}$ is

NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

1 Medium

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Application +4 | -1

1 mole of

\mathrm{Fe}\left(\mathrm{NO}_2\right)_2

is oxidised into

\mathrm{Fe}^{3+}

and

\mathrm{NO}_3^{-}

\mathrm{x}

mole of

\mathrm{Cr}_2 \mathrm{O}_7^{2-}

in acidic medium,

\mathrm{x}

View answer and explanation

Correct option: D

0.83

Option D (0.83) is correct because it is derived from balancing the oxidation and reduction half-reactions, showing that 1 mole of

Fe(NO_2)_2

requires 5/6 moles of

Cr_2O_7^{2-}

for complete oxidation.