Consider the Reaction X → Y with the Following Data

Multiple Choice

Consider the reaction X → Y with the following data: Energy of reactants = 25 kJ/mole;
Energy of products = 75 kJ/mole;
Energy of transition state = 100 kJ/mole.
The energy of activation for the reverse reaction is ________ kJ/mole.

A) 25
B) 50.
C) 75
D) 100