Question

Consider an endothermic reaction X®Y with the activation
energies, respectively, in general
(a) Eb < Ef
(b) Eb > Ef
(c) Eb = Ef
(d) There is no definite relation between Eb and Ef

Answer 1

Explanation:

Where are the given reaction g

Answer 2

In general, for a given endothermic reaction Ef>Eb.

• Ef is the activation energy of the forward reaction and Eb is the activation energy of the backward reaction.
• Since the reaction is endothermic the reactants will be lower in energy than the products.
• For a given reaction, ΔH=Ef-Eb, and as the reaction is endothermic ΔH>0
• Therefore Ef-Eb>0⇒Ef>Eb.