Chemistry - Thermochemistry Question with Solution | TestHub

$\Delta {\mathrm{H}}_{\mathrm{f}}^0$ of ${\mathrm{CO}}_2(\mathrm{g}),\mathrm{CO}(\mathrm{g}),{\mathrm{N}}_2\mathrm{O}(\mathrm{g})$ and ${\mathrm{NO}}_2(\mathrm{g})$ in $\mathrm{kJ}/\mathrm{mol}$ are respectively $-393,-110,81$ and 34. Calculate the $\Delta \mathrm{H}$ in kJ of the following reaction:

$2{\mathrm{NO}}_2(\mathrm{g})+3\mathrm{CO}(\mathrm{g})\to {\mathrm{N}}_2\mathrm{O}(\mathrm{g})+3{\mathrm{CO}}_2(\mathrm{g})$