What is the height of the activation barrier (in kcal/mol to the nearest tenths) of a unimolecular (first-order) process when the observed rate is 105 s-1? Assume that LaTeX: \kappaκ is unity, that Boltzmann’s constant is 1.381 x 10-23 J/K, Planck’s constant is 6.626 x 10-34 JLaTeX: \cdot⋅s, the Gas constant is 1.987 x 10-3 kcal/KLaTeX: \cdot⋅mol, and that the temperature is 298 K. Use the expression from transition-state theory (i. e., the Eyring Equation) given in class, and be careful of units.

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat