Carboxylic Acid Formulas

Carboxylic acids are nothing but organic compounds in which the carbon atom is bonded with an oxygen atom in the form of a double bond. The carbon atom can also be bonded to a hydroxyl group (−OH) by a single bond. There is also a fourth bond that exists and it links the carbon atom to a hydrogen atom or to some other univalent combining group. Carboxylic acid generally consist of on carboxyl group. Carboxylic acids with two or more carboxyl groups attached are called dicarboxylic acids, tricarboxylic acids, etc. The general molecular formula for carboxylic acid is Cn H 2 n+1 COOH .

While we have already discussed about the properties of carboxylic acid and other aspects like the nomenclature in our previous article, here, we will look at some of the important formulas of some of the common carboxylic acids. You can check out the list below.

Name

Formula

Number of Carbon Atoms

Methanoic acid

HCOOH

1

Ethanoic acid

CH3COOH

2

Propanoic acid

CH3CH2COOH

3

Butanoic acid

CH3(CH2)2COOH

4

Pentanoic acid

CH3(CH2)3COOH

5

Hexanoic acid

CH3(CH2)4COOH

6

Heptanoic acid

CH3(CH2)5COOH

7

Octanoic acid

CH3(CH2)6COOH

8

Nonanoic acid

CH3(CH2)7COOH

9

Decanoic acid

CH3(CH2)8COOH

10

Dodecanoic acid

CH3(CH2)10COOH

12

Tetradecanoic acid

CH3(CH2)12COOH

14

Hexadecanoic acid

CH3(CH2)14COOH

16

Octadecanoic acid

CH3(CH2)16COOH

18

Icosanoic acid

CH3(CH2)18COOH

20

For detailed discussion on acidity of carboxylic acids and other chemistry concepts you can keep visiting BYJU’s for a comprehensive learning experience.

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