Question

2. (20 points) Consider the following set of three reversible elementary reactions: R1: O2 + M + 0+0+M R2: O2 + OH O3 R3: O+O3 + O2 + O2 Write expressions for the time-rate-of-change of molar concentration of the four species O, O2, O3, and M for this reaction set. Your expressions should be in terms of the molar concentrations of the four species involved in the reactions, and the forward and reverse rate coefficients for the three reactions.

Answer 1

Solu hon Given da-la three Yever ble set of consider the following reachons elementary 0t 0tm RI O2 t m 03 02 t 0 R2 R3 Here OF molay concentrahon of yeactant x Rate of change A X] X = At Rate Of change of molar con cen trahon of Product y Y = t At y t diy] dt Rate law where V2 Yate of a yeachon Yale constant, ] molaY con cen tra hon of x

Ototm RI 02 t m Can be itten n+a forward and yevers e yeachony this forward reachon KI 20tm 02 t mk Rak aw v:Ki LoCm con centahon ai Change of molar in terms of Ya he of followws A[M7 ACo At At AT Am] At R2 O2 t0 O3 forward reachon:- Rate law V Co2o] Δ(0) At AL At

R3 0 03 02 t 02 K 3 forward Yeachon ki 202 Ot 03 Rale lau ACas A CoJ ACo] 17 2 At At AL Reverse reachon 3 0t 03 202 Rake lauw afoafe At At