# 4.1: Activation Energy - Ea

Learning Objectives

• Explain activation energy.
• Describe how energy varies during a chemical reaction.
• Plot chemical potential energy of the system as a function of the reaction coordinate.
• Explain the model $$k = \ce{A e}^{\Large{E_{\Large\ce a}/RT}}$$ for chemical kinetics.
• Plot k versus 1/T when k is measured at several T.
• Calculate Ea when a series of k and T are given.
• Calculate k at certain T.