Activation energy is:
I.the minimum kinetic energy required for each molecule in a collision to produce a reaction.
II.the minimum total kinetic energy required for the molecules in a collision to produce a reaction.
III.a factor in determining the rate of a reaction.
IV.high for fast reactions.

Question

Quizplus · Accepted Answer

II and III are correct. Activation energy is the minimum total kinetic energy that reacting molecules need for a reaction to occur, not just for each molecule. It also influences the reaction rate, but it is typically low for fast reactions, not high.

Activation Energy Is: I.the Minimum Kinetic Energy Required for Each Molecule in a Molecule