Question

The energy that is required to get a reaction started that is recovered as the reaction proceeds is known as :

• A. Activation energy
• B. Kinetic energy
• C. Potential energy
• D. Free energy
• E. Reaction energy

Answer 1

The correct option is A Activation energy

Activation energy is the minimum energy required to start a chemical reaction. The activation energy of a reaction is usually denoted by $E_a$ and given in units of kilojoules per mole $\left(kJ/mol\right)$ or kilocalories per mole $\left(kcal/mol\right).$

As the products form, the energy is recovered as we go down the hill in plot.

Option-A is correct.