The equivalent weight of ${\rm{KI}}{{\rm{O}}_3}$ in the reaction, $2{\rm{Cr}}{\left( {{\rm{OH}}} \right)_3} + {\rm{O}}{{\rm{H}}^ - } + {\rm{KI}}{{\rm{O}}_3} \to 2{\rm{CrO}}_4^{2 - } + 5{{\rm{H}}_2}{\rm{O}} + {\rm{KI}}$ is

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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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The equivalent weight of

\mathrm{KI}{\mathrm{O}_3}

in the reaction,

2\mathrm{Cr}{\left( {\mathrm{OH}} \right)_3} + \mathrm{O}{\mathrm{H}^ - } + \mathrm{KI}{\mathrm{O}_3} \to 2\mathrm{CrO}_4^{2 - } + 5{\mathrm{H}_2}\mathrm{O} + \mathrm{KI}

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Correct option: C

Mol. wt./6

Option C (Mol. wt./6) is correct because the change in oxidation number of iodine in KIO3 is 6, and the equivalent weight is the molecular weight divided by this change.

JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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