9701 MCQ Solution 23

Question 23: [Organic > Halogen Derivatives]:

Chloroethene, CH₂=CHCl, is the monomer of pvc.

What are the C–C–C bond angles along the polymeric chain in pvc?

A They are all 109 °.

B Half are 109 ° and half are 120 °.

C They are all 120 °.

D They are all 180 °.

Reference: Past Exam Paper – November 2002 Paper 1 Q23

Solution 23:

Answer: A.

Each carbon has four bonds with no lone pairs therefore 109° like methane.