CHEM 1212K Lecture Notes - Lecture 4: Reagent, Enzyme, Kinetic Energy
Document Summary
Chapter 13: average rates: rate = [a]m[b]nk, a + b products. Don"t (cid:272)are a(cid:271)out produ(cid:272)ts in average rates. Can only determine m/n through experimental data that is given. A b (1) . 10m (2) . 20m (3) . 40m. Rate = k[a]m (2/1) = (. 015m/s = k[. 20]m)/(. 015m/s = k[. 10]m) M = 0: rate = k[a]0 = k 0th order reaction, ex] two reactants. Chcl3 + cl2 products rate (1) . 010m . 010m . 0035m/s (2) . 020m . 010m . 0069m/s (3) . 020m . 020m . 0098m/s (4) . 040m . 040m . 026m/s. 2/1 = (. 0069m/s) = k[. 020m]m[. 010m]n)/(. 0035m/s = k[. 010m]m[. 010m]n: 2 = [2]m[1]n. 3rd order = 8x the k: half- life. 1st oder: ln[a]t - ln[a]0 = -kt ln([a]t/[a]0) = -kt: these are equivalent equations. 69 = -kt: k = -1. 38, rate law integrated. [a]t = -kt1/2 + [a]0: [a]t = -kt1/2 + [a]0, [a]t [a]0 = -kt1/2. 1/ [a]t = kt1/2 + 1/[a]0: 1/ a]t = kt1/2 + 1/[a]0, 1/ [a]t 1/[a]0 = kt1/2, t1/2 = 1/ [a]k.
