Chemistry - Thermochemistry Question with Solution | TestHub

The enthalpies of formation of ${\mathrm{FeO}}_{(S)}$ and ${\mathrm{Fe}}_2{\mathrm{O}}_{3(S)}$ are -65.0 and -197.0 k.cal $/\mathrm{mol}$ respectively. Initially a mixture of two oxides two moles ${\mathrm{FeO}}_{(S)}$ and one mole ${\mathrm{Fe}}_2{\mathrm{O}}_{3(S)}$ are present. If by oxidation the mole ratio of ${\mathrm{FeO}}_{(S)}$ and ${\mathrm{Fe}}_2{\mathrm{O}}_{3(S)}$ in mixture changes to 1:2, the amount of heat released

( $k.cal$ ) in this process is