Question detail
What is the monomer for the addition polymer formed from ethene?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Alkenes
Question
- A. C2H4
- B. C3H6
- C. C4H8
- D. C2H6
Answer
C2H4
Explanation
Ethene (C2H4) is the monomer that undergoes addition polymerization to form polyethene. The double bond in ethene allows for the formation of long chains by repeated addition across the C=C bonds.
Common mistake
Identifying Monomers from Repeat Units
Students often confuse the repeat unit of an addition polymer with the monomer it originated from, leading to incorrect identification.
To correctly identify the monomer from a repeat unit, first recognize the structure of the repeat unit, then determine the original alkene by removing the bonds that connect the repeat units and adjusting for any hydrogen atoms lost during polymerization. For example, if the repeat unit is -CH2-CH2-, the corresponding monomer is ethene (C2H4).
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