Q. If the molecular weight of ${Na}_{2}S_{2}O_{3}\ and\ I_{2}\ are\ M_{1}\ and\ M_{2}$ respectively, then what will be the equivalent weight of ${Na}_{2}S_{2}O_{3}\ and\ I_{2}$ in the following reaction? $2S_{2}O_{3}^{2 -}\ + I_{2} \rightarrow S_{4}O_{6}^{2 - \ } + \ 2I^{-}$

A) $M_{1},M_{2}$
B) $M_{1},M_{2}/2$
C) $2M_{1},M_{2}$
D) $M_{1},2M_{2}$
Explanation

(b)
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Equivalent mass of $Na_{2}S_{2}O_{3} = \frac{M_{1}}{1} = M_{1}$
Equivalent mass of $I_{2} = \frac{M_{2}}{2}$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.