Question

The volume, in $mL,$ of $0.02MK_{2}Cr_{2}O_{7}$ solution required to react with $0.288g$ of ferrous oxalate in acidic medium is ________. (Molar mass of $Fe=56gmol^{- 1}$ )

Answer 1

$K_{2}Cr_{2}O_{7}+FeC_{2}O_{4} \rightarrow Cr^{3 +}+Fe^{3 +}+CO_{2}$
$\frac{0 . 02 \times vol \times 6}{1000}=3\times \frac{0 . 288}{144}$
$Volume=\frac{200}{4}=50mL$