(A) The oxidation state of $Fe$ changes from $+2$ to $+3$ (change of $1$ electron).The oxidation state of $C$ in $C_2O_4^{2-}$ changes from $+3$ to $+

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(A) The oxidation state of $Fe$ changes from $+2$ to $+3$ (change of $1$ electron).The oxidation state of $C$ in $C_2O_4^{2-}$ changes from $+3$ to $+4$ (change of $1$ electron per $C$ atom).Since there are $2$ carbon atoms,the total change for carbon is $2 \times 1 = 2$ electrons.Total change in oxidation number $= 1 (Fe) + 2 (C) = 3$.Therefore,the equivalent weight $E = \frac{M}{3}$.

Class 11 Chemistry Some Basic Concepts of Chemistry Atomic, Molecular and Equivalent masses

Medium

In the transformation $FeC_2O_4 \rightarrow Fe^{3+} + CO_2$,the equivalent weight of $FeC_2O_4$ is $M/n$. The value of $n$ is:

A
$M/3$
B
$M/6$
C
$M/2$
D
$M/1$

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Some Basic Concepts of Chemistry

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Atomic, Molecular and Equivalent masses

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In the transformation $FeC_2O_4 \rightarrow Fe^{3+} + CO_2$,the equivalent weight of $FeC_2O_4$ is $M/n$. The value of $n$ is:

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