Question

analyze the given energy profile diagram and choose the correct answer from the options:
activation energy is greater than the enthalpy change.
enthalpy change is greater than the activation energy.
energy of products is greater than the energy of reactants.

Explanation:

Step1: Identify activation energy and enthalpy change

Activation energy (\(A\)) is the energy barrier. Enthalpy change (\(B\)) is the difference between reactant and product energy.

Step2: Compare magnitudes

From the diagram, \(A > B\). Also, energy of products is less than energy of reactants (exothermic reaction as products are at lower energy level).

Answer:

Activation energy is greater than the enthalpy change.