A certain reaction has an enthalpy of Δ=44 kJ and an activation energy of a=61 kJ. What is the activation energy of the reverse reaction?

E = 17 kJ

Explanation:

The enthalpy of the reaction is:

Where:

Ep: is the energy of the products

Er: is the energy of the reactants

Similarly, the enthalpy of the reaction is related to the activation energy forward () and to the activation energy reverse () as follows:

Having that ΔH = 44 kJ and = 61 kJ, the activation energy of the reverse reaction is:

Therefore, the activation energy of the reverse reaction is 17 kJ.

I hope it helps you!

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.