Question

Number of moles of $K_{2}C{r}_2{O}_7$ reduced by one mole of $S{n}^{2+}$ ions in acidic medium is :

• A. $\frac{1}{3}$
• B. $3$
• C. $\frac{1}{6}$
• D. $6$

Answer 1

The correct option is A $\frac{1}{3}$

Number of moles of $K_{2}C{r}_2{O}_7$ reduced by one mole of $S{n}^{2+}$ ions in acidic medium is $\frac{1}{3}$.
$C{r}_2{O}_7^{2-}+14H^{+}+3S{n}^{2+}\to 2C{r}^{3+}+3S{n}^{4+}+7H_{2}O$