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.

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