1. Given the probability of chain propagation, B, is 25% for the polymerization of styrene, determine the number averaged molecular weight, weight averaged molecular weight, extent of reaction and polydispersity if

the reaction is terminated by: (15 marks) Hint: M₁ = the molecular weight of the monomer (styrene) a. Disproportionation b. Combination c. Clearly explain the difference in the results.