GATE XE · 2021 · XE-F
Question 20: Chemistry of high polymers
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Question 20
XE-FNAT2 marksNeeds review
A polymer is synthesized from 2 moles of terephthalic acid (molecular weight of the repeat unit, (-OCC₆H₄CO-), is 132 g/mol), 1 mol of ethylene glycol (molecular weight of the repeat unit, (-OCH₂CH₂O-), is 60 g/mol), and 1 mol of butylene glycol (molecular weight of the repeat unit, (-O(CH₂)₄O-), is 88 g/mol). The reaction is terminated at 99% conversion of the acid. The number averaged molecular weight,
(rounded off to the nearest integer) is ______ g/mol.Log in to check the answer
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2021XE-F
GATE XE 2021 · Paper 1
Engineering Sciences · Original paper archive
- Section
- Section XE-F
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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