Question

For the formation of terylene, the number of moles of ethylene glycol required per mole of terephthalic acid is:

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is A 1

For the preparation of terylene, n moles of glycol, n moles of glycol are required for n moles of terephthalic acid.

$\therefore$ Per mole of terephthalic acids, moles of ethylene glycol required is $=1$

Hence, the correct option is A.