20.0 mL of 0.100 M FeSO4 is titrated in acidic medium with 0.0200 M K2Cr2O7 (Cr2O7^2- -> Cr^3+). The volume of dichromate needed is:

JEE Main levelSingle correct optionDifficulty 2 of 3eq029

$20.0 mL$ of $0.100 M$ $FeSO X_{4}$ is titrated in acidic medium with $0.0200 M$ $K X_{2} Cr X_{2} O X_{7}$ ( $Cr X_{2} O X_{7} X^{2 -} Cr X^{3 +}$ ). The volume of dichromate needed is:

Equivalents of

FeSO X_{4} = 0.100 \times 0.0200 = 2.00 \times 1 0^{- 3}

(

n = 1

). Dichromate normality

= 0.0200 \times 6 = 0.120 N

. Volume

= 2.00 \times 1 0^{- 3} /0.120 = 0.01667 L = 16.7 mL