Ch ical chemistr Reaction Kinetic Determination of the rate law 3. Initial-rate method The rate law r=k42[B/…L 1748) Measure ro for two different initial concentrations LAo. and LAJo.2 while keeping B o,/C],.fixed The ratio of initial rates for runs 1 and 2 0.2 702/70= a can be found The orders B,...1 can be Io ound similarly6 Physical Chemistry Determination of the Rate Law 3. Initial-rate method    The rate law r = k[A] [B] [L] (17.48) The ratio of initial rates for runs 1 and 2          = 0,1 0,2 0,2 0,1 [ ] [ ] / A A r r Measure r0 for two different initial concentrations [A]0,1 and [A]0,2 while keeping [B]0 , [C]0 , …fixed.  can be found The orders ,… can be found similarly Reaction Kinetics