Which of the following is the first chain propagating step in the radical polymerization of ethylene? A)ROOR + CH₂ CH₂ → ROCH₂CH₂OR B) ∙ RO∙ + CH₂ CH₂ → ROCH₂CH₂ C)RO∙ + CH₂ CH₂ → ROCH CH₂ + H∙ D) ∙ ∙ ROOR + CH₂ CH₂ → 2 ROH + CH CH E) ∙ ∙ 2RO∙ + CH₂ CH₂ → 2 ROH + CH CH

Question

Quizplus · Accepted Answer

The first chain propagating step in the radical polymerization of ethylene involves the reaction between a radical initiator (RO∙) and ethylene (CH2=CH2), forming a new radical on the ethylene molecule (CH2=CH∙). Therefore, the correct option is B, which shows the reaction between RO∙ and CH2=CH2, forming CH2=CH∙. The other options show different reactions, such as termination, initiation or hydrogen abstraction, which are not the first chain propagating step in the radical polymerization of ethylene.

Which of the Following Is the First Chain Propagating Step