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Q.

Enthalpies 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 ∆rH(in kJ mol-1) for the reaction:N2O4(g) + 3CO(g) → N2O(g) + 3CO2(g)

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answer is -0778.00.

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Detailed Solution

ΔrH=81+3×(−393)−3×(−110)−9.7=−777.7kJmol−1

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