Question

What is the enthalpy change involved in the isomerization reaction of hexene from trans-hexene to cis-hexene? Given the standard enthalpy of formation values for trans-hexene and cis-hexene are -123 kJ/mol and -130 kJ/mol respectively.

Answer 1

To calculate the enthalpy change  H  for the isomerization reaction of hexene from trans-hexene to cis-hexene, we can use the following equation:H = H products  - H reactants In this case, the reactant is trans-hexene, and the product is cis-hexene. The standard enthalpy of formation values are given as -123 kJ/mol for trans-hexene and -130 kJ/mol for cis-hexene.H =  -130 kJ/mol  -  -123 kJ/mol H = -130 + 123H = -7 kJ/molThe enthalpy change involved in the isomerization reaction of hexene from trans-hexene to cis-hexene is -7 kJ/mol.