Question

In higher olefins, what happens to the free energy on hydrogenation?

(a) Increases

(b) No change

(c) Decreases

(d) None of the mentioned

This question was posed to me in an interview.

Origin of the question is Kinetic and Thermodynamics of Hydrogenation Reaction topic in portion Hydrogenation of Unit Processes

Answer 1

Right answer is (c) Decreases

For explanation I would say: For the higher olefins, the free-energy decrease on hydrogenation is very small and approaches zero.