The vapour-phase hydration of ethylene to ethanol is represented by: C₂H4 (g) + H₂O(g) → C₂H₂OH(g) Calculate the standard heat of reaction if the following data are available: 2CO₂(g) + 3H₂O (1)→ C₂H5OH (1) + 30₂(g) AH 298 = 1366.91 kJ The standard heat of combustion of ethylene at 298 K is -1410.99 kJ/mol and heats of vaporization of water and ethanol are, respectively, 44.04 kJ/mol and 42.37 kJ/mol.

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