Which of the following statements concerning potential energy diagrams is true?

Question

a) The activation energy of a reaction is proportional to its enthalpy change
b) The peak on this diagram represent an ineffective collision
c) The activation energy is measured from the origin to the top of the peak
d) The activation energy of the reverse reaction may be calculated from the diagram
e) The units of the diagram are joules and number of molecules

Answer 1

c) The activation energy is measured from the origin to the top of the peak

Answer 2

I thought it was d) ?

Answer 3

Apologies for the confusion. You are correct. The correct statement is d) The activation energy of the reverse reaction may be calculated from the diagram.