Chemistry - Redox Reactions Question with Solution | TestHub

$\text{2}\stackrel{\text{+2}}{\text{Fe}}{\text{SO}}_{\text{4}}\to \text{2}\stackrel{\text{+3}}{{\text{Fe}}_{\text{2}}}{{\text{(SO}}_{\text{4}}\text{)}}_{\text{3}}$
Change in oxidation state per Fe atom is 1. So, equivalent weight = atomic weight.