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Q. The equivalent weight of $K _{4}\left[ Fe ( CN )_{6}\right]$ in the given reaction is:
$K _{4}\left[ Fe ( CN )_{6}\right] \xrightarrow{ [O] } Fe ^{3+}+ NO _{3}^{-}+ CO _{2}$

Some Basic Concepts of Chemistry

Solution:

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Net change in oxidation number $=+60+1=+61$

Eq. wt. $=\frac{M}{61}$