Gọi tên theo danh pháp thay thế của các carboxylic acid sau:
a) (CH3)2CH–COOH.
b) (CH3)3C–COOH.
c) CH3CH=CH–COOH.
d) CH3CH=C(CH3)–COOH.
Đáp án đúng:
a) 2-methylpropanoic acid
b) 2,2-dimethylpropanoic acid
c) but-2-enoic acid
d) 2-methylbut-2-enoic acid