Question

question 24
in the figure above, the amount of energy symbolized by the line \a\ would be the

a. reactant energy
b. activation energy
c. product energy
d. cofactor energy
e. intermediate energy

Explanation:

Activation energy is the minimum energy required to initiate a chemical reaction. In an energy - reaction diagram, it is represented as the energy difference between the reactants and the highest point (transition state) of the energy curve. In the given figure, line "A" represents this energy difference which is characteristic of activation energy. Reactant energy would be the energy level of the reactants (\(2H_2 + O_2\)), product energy is the energy level of the products (\(2H_2O\)), cofactor energy is not relevant in this general reaction energy diagram context, and intermediate energy (if there was an intermediate) would be a local energy minimum or maximum in a multi - step reaction, but there is no indication of an intermediate here.

Answer:

B. activation energy