\({\mathrm{KClO}}_{3}+6{\mathrm{FeSO}}_{4}+3{\mathrm{H}}_{2}{\mathrm{SO}}_{4}\to \mathrm{KCl}+3{\mathrm{Fe}}_{2}{\left({…

\({\mathrm{KClO}}_{3}+6{\mathrm{FeSO}}_{4}+3{\mathrm{H}}_{2}{\mathrm{SO}}_{4}\to \mathrm{KCl}+3{\mathrm{Fe}}_{2}{\left({\mathrm{SO}}_{4}\right)}_{3}+3{\mathrm{H}}_{2}\mathrm{O}\)

The above reaction was studied at \(300 K\) by monitoring the concentration of \(FeSO _4\) in which initial concentration was \(10 ~M\) and after half an hour became \(8.8 ~M\). The rate of production of \(Fe _2\left( SO _4\right)_3\) is___________ \(\times 10^{-6} mol L ^{-1} s ^{-1}\). (Nearest integer)

[JEE Main 2023, 11 Apr (Shift 1)]