Question

her concentration ovet lumer radicals, the 3. The overall rate of radical polymerization is measured as the decrease in monomer con time (AIM)/dt). If it is assumed that initiator radicals are equally as reactive as polymer radie reactions below can be produced showing the dissociation, propagation, and termination steps invalu in radical polymerization. a. Using the reactions provided, write the rate laws for each step. b Derive the equation for the overall rate of polymerization from the rate laws of each step and the stationary state approximation that [P] is constant (e.g. d[P]/dt = 0). Explain the effect on the polymerization rate and on the degree of polymerization if the initiator concentration is doubled. Rate law Dissociation of initiator I kv 2P Propagation: P*+ M – Termination: Pºp

Answer 1

And a) Rate la equahon for any Steb is given as Produt rate Constant and Contentnation Hectontó Kt Rate = Kp Rete kp( KT Rate = rate from last step Ratc kr p*D SA on px dt Put thi Value in D KT K Kf (11 er Retc Rate kr 7 c Inhibitok aays desreab te tate3 Pymkgatren qmd also the dlegnes olymenigatel.