1.

Which of the following have the maximum melting point? (a) Acetic acid(b) Formic acid(c) Propanoic acid(d) Butanoic acid

Answer»

Correct option is (a) Acetic acid

Carboxylic acids with even number carbon atoms have higher melting point than those with odd number carbons atom. Among acetic acid and butanoic acid the latter molecules face more repulsion hence acetic acid has higher melting point.



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