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7 Organic chemistry

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Question 29

A polyester is made from two monomers. One of the monomers is HO-CH2-CH2-CH2-CH2-CH2-OH\text{HO-CH}_2\text{-CH}_2\text{-CH}_2\text{-CH}_2\text{-CH}_2\text{-OH}HO-CH2​-CH2​-CH2​-CH2​-CH2​-OH.

The table shows four compounds.

CompoundFormula
WCH3-CH2-CH2-CH2-COOH\text{CH}_3\text{-CH}_2\text{-CH}_2\text{-CH}_2\text{-COOH}CH3​-CH2​-CH2​-CH2​-COOH
XHO-CH2-CH2-CH2-OH\text{HO-CH}_2\text{-CH}_2\text{-CH}_2\text{-OH}HO-CH2​-CH2​-CH2​-OH
YHOOC-CH2-CH2-CH2-COOH\text{HOOC-CH}_2\text{-CH}_2\text{-CH}_2\text{-COOH}HOOC-CH2​-CH2​-CH2​-COOH
ZH2N-CH2-CH2-CH2-NH2\text{H}_2\text{N-CH}_2\text{-CH}_2\text{-CH}_2\text{-NH}_2H2​N-CH2​-CH2​-CH2​-NH2​

Which compound could be the other monomer?

[1]
A

Compound W

B

Compound Z

C

Compound Y

D

Compound X

Markscheme

7 Organic chemistry Questions

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