Question
Physical Chemistry Question on Kinetics of polymerization
The correct statement for a thermally initiated radical polymerization in a solution is :
(Assume: Steady-state and equal reactivity of the propagating radicals, termination reactions are only by combination, and no chain transfer reaction.
Given: Rp = rate of polymerization, DP = degree of polymerization, [I] = initiator concentration, and [M] = monomer concentration.)
A
with increase in [I], both Rp and DP increase.
B
with increase in [M], both Rp and DP increase.
C
Rp decreases with increase in [I] but DP increases with increase in [M]
D
DP increases with increase in [I] and DP decreases with increase in [M].
Answer
with increase in [M], both Rp and DP increase.
Explanation
Solution
The correct option is (B) : with increase in [M], both Rp and DP increase.