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Enthalpy of formation of CO(g), CO2(g), N2O(g) and N2O4(g) are -110, -393, 81

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Enthalpy of formation of CO(g), CO2(g), N2O(g) and N2O4(g) are -110, -393, 81 and 9.7 kJ mol-1 respectively. Find the value of ΔrH for the reaction.

N2O4 (g) + 3CO (g) → N2O (g) + 3CO2 (g)

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ΔHReaction = (Sum of ΔH°f value of products)

-(Sum of ΔHf°) values of Reactants)

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