CHM 116 Study Guide - Midterm Guide: Reaction Rate Constant, Activation Energy, Equilibrium Constant
Document Summary
Kinetics: all diamonds will turn into graphite in a long time (activation energy) Rate expressions: a way of measuring the rate of a reaction. Rate: all of the following are valid expressions. A sample question for this is, which of the following is a valid rate expression? . Orders don"t have to be integers (sample problem based off of sheet given by chad, red means cancelled out) Therefore, rate=k[no]2[cl2] (x=2 + x=1 = 3rd order overall) k=rate/[no]2[cl2] = (0. 18m/s) / ([0. 10 m]2[0. 1om]) k= 180 m-2s-1. Elementary reaction: can"t be broken into and simpler way (less than or equal to 2 steps) Rate of slowest step is the rate of the reaction. Catalyst- something that speeds reaction by lowering activation energy. Collision theory: collision, proper orientation, sufficient energy. Higher temperature = increase in collision frequency. Higher temperature = increase in % of high energy collisions. Integrated rate laws- calculation of concentrations over time.
