Question

use the graph to answer the questions. which part of the graph represents activation energy? c a d b e choose the best definition for activation energy. energy produced by an object in motion energy difference between reactants and products in a reaction energy absorbed during a chemical reaction energy that must be added to start a reaction energy that is stored in chemical bonds

Explanation:

Activation energy is the minimum amount of energy that reactants must possess to start a chemical reaction. On an energy - time graph, it is the difference in energy between the reactants (at the start of the reaction) and the transition state (the highest - energy point on the graph). In the given graph, the reactants are at energy level A and the transition state is at the peak of the curve. The vertical distance from the reactant energy level to the peak of the curve represents the activation energy, which is D. The best definition of activation energy is the energy that must be added to start a reaction.

Answer:

Which part of the graph represents activation energy? C. D
Choose the best definition for activation energy: energy that must be added to start a reaction