CHM135H1 Lecture Notes - Lecture 3: Canavalia Ensiformis, Activation Energy, Reagent

• School: UTSG
• Department: Chemistry
• Course: CHM135H1
• Professor: Dvira Segal

Document Summary

Mechanisms are inferred from the experimental rate law: Rate depends upon: concentration of reactants, concentration of reactants, temperature, temperature, temperature, presence of catalyst. Reaction is collisions between reactants a and b Reaction is collisions between reactants a and b rate of collision = z [a] [b] that have both correct orientation p = sensitivity to orientation: rate of collision = (z [a] [b]) with correct orient"n p. C (transition state) f = e ea / rt. Temperature dependence of rate constant, k, due (mostly!) to f: Recall: 25oc 35oc = 3 rate. Ea = 63 kj/mol f (25oc) = e ea / rt f (35oc) = e ea / rt f (35oc) f (25oc) k = z p f f = e ea / rt k = z p e ea / rt. At 25oc, k = a e ea / rt.