CHEM 001B Lecture Notes - Lecture 20: Reaction Rate Constant, Activation Energy, Limiting Reagent
Document Summary
Integrated rate law : mathematical expression describing the change in concentration of a reactant with time sunlight. Half-life (t 1/2 ): the time in the course of a chemical reaction during which the concentration of a reactant decreases by half. From integrated rate law, when [x] t = [x] o. The radioactive isotope 32 p decays by first-order kinetics and has a half-life of. Given the half-life, we can calculate k = 0. 693/t 1/2 . With the value of k, we can use the integrated rate law to calculate the time required for 95% decomposition (5% remaining) General form for the integrated second-order rate law: For the reaction, no 2 + o 3 no 3 + o 2 the rate law = k[no 2 ][o 3 ] The reaction is first order in both reactants and is second order overall. Assuming that the [o 3 ] > [no 2 ] in the above reaction.
