Equivalent mass of ${\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3}$ in its reaction with ${{\rm{I}}_2}$ is equal to :

$Molar{\rm{ }}mass{\rm{ }}/{\rm{ }}2$

$Molar{\rm{ }}mass{\rm{ }}/{\rm{ }}3$

$Molar{\rm{ }}mass{\rm{ }}/{\rm{ }}4$

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NEET UG CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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Equivalent mass of

\mathrm{N}{\mathrm{a}_2}{\mathrm{S}_2}{\mathrm{O}_3}

in its reaction with

{\mathrm{I}_2}

is equal to :

View answer and explanation

Correct option: A

Molar\mathrm{ }mass

Option A (

Molar\mathrm{ }mass

) is correct because in the reaction of sodium thiosulfate with iodine, each mole of Na2S2O3 reacts with one mole of I2, so the equivalent mass is equal to the molar mass.

NEET UG CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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