The equivalent mass of iodine in the followin | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The reaction is $I_2 + 2S_2O_3^{2-} \longrightarrow 2I^{-} + S_4O_6^{2-}$.In this reaction,the oxidation state of $I$ changes from $0$ in $I_2$ to

Vedclass · Accepted Answer

$127$

Vedclass · Answer

(B) The reaction is $I_2 + 2S_2O_3^{2-} \longrightarrow 2I^{-} + S_4O_6^{2-}$.In this reaction,the oxidation state of $I$ changes from $0$ in $I_2$ to $-1$ in $I^-$.Total change in oxidation state for one molecule of $I_2$ is $2 	imes |0 - (-1)| = 2$.Thus,the valence factor $(v.f.)$ is $2$.The molar mass of $I_2$ is $2 	imes 127 = 254 \ g/mol$.The equivalent mass is calculated as $\frac{	ext{Molar mass}}{v.f.} = \frac{254}{2} = 127$.

The equivalent mass of iodine in the following reaction is $I_2 + 2S_2O_3^{2-} \longrightarrow 2I^{-} + S_4O_6^{2-}$

Similar Questions

$2 \ g$ of metal carbonate is neutralized completely by $100 \ mL$ of $0.1 \ N$ $HCl$. The equivalent weight of metal carbonate is:

When an ion absorbs $6 \times 10^{20}$ electrons,it gets reduced. What is the number of gram equivalents of the ion?

The element whose $1$ atom has a mass of $10.86 \times 10^{-26} \ kg$ is

The equivalent weight of $K_2Cr_2O_7$ in acidic medium is:

An alloy of metals $X$ and $Y$ weighs $12 \ g$ and contains atoms $X$ and $Y$ in the ratio of $2:5$. The percentage of metal $X$ in the alloy is $20$ by mass. If the atomic mass of $X$ is $40$,what is the atomic mass of metal $Y$ (in $amu$)?

Vedclass Test Series

Exam Paper Generator

Online Exam Module