Chemistry - Thermochemistry Question with Solution | TestHub

The${\mathrm{\Delta }}_{\mathrm{f}}\mathrm{H}°$for$\mathrm{C}{\mathrm{O}}_2\left(\mathrm{g}\right),\mathrm{C}\mathrm{O}\left(\mathrm{g}\right)$and${\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)$are -393.5, -110.5 and -241.8$\mathrm{k}\mathrm{J}\mathrm{m}\mathrm{o}{\mathrm{l}}^{-1}$respectively. The standard enthalpy change (in kJ) for the reaction$\mathrm{C}{\mathrm{O}}_2\left(\mathrm{g}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right)\to \mathrm{C}\mathrm{O}\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)$is