In the reaction, $2{\rm{CuS}}{{\rm{O}}_4} + 4{\rm{KI}} \to {\rm{C}}{{\rm{u}}_2}{{\rm{I}}_2} + 2{{\rm{K}}_2}{\rm{S}}{{\rm{O}}_4} + {{\rm{I}}_2}$ The ratio of equivalent weight of ${\rm{CuS}}{{\rm{O}}_4}$ to its molecular weight is :

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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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In the reaction,

2\mathrm{CuS}{\mathrm{O}_4} + 4\mathrm{KI} \to \mathrm{C}{\mathrm{u}_2}{\mathrm{I}_2} + 2{\mathrm{K}_2}\mathrm{S}{\mathrm{O}_4} + {\mathrm{I}_2}

The ratio of equivalent weight of

\mathrm{CuS}{\mathrm{O}_4}

to its molecular weight is :

View answer and explanation

Correct option: D

Option D (1) is correct because each Cu2+ ion is reduced to Cu+ in Cu2I2, involving a change of 1 electron per copper atom, thus the equivalent weight is equal to the molecular weight.

JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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