Distinguish between addition and condensation polymerization with one example each — JEE Chemistry
Distinguish between addition and condensation polymerization with one example each.
1 Answer
SGSneha Gupta
✓ Accepted
· 2mo ago
▲ 5
Addition polymerization: Monomers add together without loss of any byproduct. Requires C=C double bonds.
$$n\,CH_2=CH_2 \xrightarrow{catalyst} (-CH_2-CH_2-)_n$$
$$(Polyethylene)$$
Condensation polymerization: Monomers react with loss of small molecules (H₂O, HCl, etc.). Requires two different functional groups.
$$n\,HO-R-OH + n\,HOOC-R'-COOH \rightarrow (-O-R-OOC-R'-CO-)_n + n\,H_2O$$
$$e.g., Nylon-6,6 (from hexamethylenediamine + adipic acid)$$
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Discussion (3)
AB
Pro tip: memorise the standard result, it reappears in many problems.
L
How do we know the approximation is valid here?
A
I solved it a slightly different way and got the same answer, good sign.