1. What concentration of benzoyl peroxide (ka = 1.45 x 10-s at 60C) would be needed to polymerize a 2.00 M solution of styrene in toluene to get molecular weight of 200,000 at the beginning of polymerization (time 0, polydispersity index = 1)? Polymerization was conducted at 60C. Assume that termination occurs only by radical combination, that no chain transfer occurs, and that initiator efficiency is 0.5. Also, assume that values of propagation and termination rate constants as provided below. The molecular weight of styrene is 104 g/mol. kp = 176 M15-1 kt = 7.2 x 107m15-1 ki2 la , exp[-e (e-e;)] & exp[-ese, -e)] r2 kz ki II 22 Q X = k, [M] (k, fka [1])"? 1/2