CHM135H1 Lecture Notes - Lecture 15: Elementary Reaction, Arrhenius Equation, Reaction Step
90
CHM135H1 Full Course Notes
Verified Note
90 documents
Document Summary
Unit of rate constant -> depends on order. 4 : l^2 / mol^2 * s. Reaction mechanisms : the sequence of reaction steps that shows the pathway from reactants to products. Reaction : 2no + o2 -> 2no2. Step 1: no + no -> n2o2. Step 2 : n2o2 + o2 -> 2no2. N2o2 is the reaction intermediate, doesn"t appear in overall reaction. Unimolecular : a single reactant dissociates x3 -> x2 + x. Bimolecular : two reactants into one product x3 + x -> 2x2. Termolecular : three reactants -> two products (rare) x + x + y -> x2 + y. Rate law depends on the product of concentrations for an elementary step. The slowest elementary reaction and its rate law represent the rate law of. Factors affecting reaction rate the overall reaction. As the temperature increases, the speed of the molecules increases, and the collision rate increases, so the reaction rate increases.
