Solution of the problem 293 of the collection on genera

Solution of the problem 293 of the collection on genera

293. Determine the ΔHº298 of the formation of ethylene using the following data:

C2H4 (g) + 3O2 (g) = 2CO2 (g) + 2H2O (g) ΔHº = -1323 kJ

C (graphite) + O2 (g) = CO2 (g.) ΔHº = -393.5 kJ

H2 (g) + ½O2 (g) = H2O (g.) ΔHº = -241.8 kJ

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