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The correct structural formula of butanoic acid is:

Answers (1)

Answer:(d)

Solution:

Butanoic acid formula =   C_4H_8O_2

C_3H_7COOH

The general formula of carboxylic acid is R-COOH where R is an alkyl group.

General formula of carboxylic acid = C_{n-1}H_{2n-1}COOH

Butanoic acid means 4 carbons

Therefore, option (d) is correct.

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