Question

laboratory quantities of ethylene can be prepared by an elimination reaction of ethanol using and acid catalyst.Calculate the enthalpy change for the conversion of ethanol into ethylene and water using standared enthalpies formation.

Answer 1

C₂H₅OH(l) = C₂H₄(g) + H₂O(l)
∆H°r 5 ∑ nHfp – ∑ nH ° fr
5 * (–233.3 kJ – (–235.2 kJ)) = 511.9 kJ