Q 1129467311.     A `1.0` g sample of `Fe_2O_3` solid of 55.2% purity is dissolved in acid and reduced by heating the solution with zinc dust. The resultant solution is cooled and made up to 100.0 mL. An aliquot of 25.0 mL of this solution requires for titration. Calculate the number of electrons taken up by the oxidant in the reaction of the above titration.


JEE 1991
A

`2.12 × 10^(23)`

B

`0.86 × 10^(22)`

C

`1.57 × 10^(20)`

D

`1.04 × 10^(21)`

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