Number of moles of `K_2Cr_2O_7` reduced by one mole of `Sn^(2+)` ion is

Options

A. `(1)/(3)`
B. `3`
C. `(1)/(6)`
D. 6

Answer

a

Explanation

Eq. of `Cr_2O_7^(2-)=`Eq. of `Sn^(2+)`
(`n` factor`=6`) (`n` factor`=6`) ltbr `(1)/(6)` mol. Of `Cr_2O_7^(2-)=(1)/(2)`mol. Of `Sn^(2+)`
1 mol of `Sn^(2+)=(2)/(6)=(1)/(3)` mol. Of `Cr_2O_7^(2-)`