Chapter 10, Problem 31P

10-37 Draw structural formulas for the eight carboxylicacids with the molecular formula C₆H₁₂O₂.

Interpretation Introduction

Interpretation:

The structural formula for eight carboxylic acids with the molecular formula ${\text{C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{2}}$ should be drawn.

Concept Introduction:

It is an organic compound with the functional group -COOH. It has the carboxyl group.

Answer to Problem 31P

The eight carboxylic acids that have the molecular formula ${\text{C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{2}}$ are ${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-COOH}$

$\text{CH}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-COOH}$

${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-CH}\left({\text{CH}}_{\text{3}}\right)\text{-COOH}$

${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}\text{-CH}\left({\text{CH}}_{\text{3}}\right){\text{-CH}}_{\text{2}}\text{-COOH}$

$\text{CH}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{-CH}\left({\text{CH}}_{\text{3}}\right)\text{-COOH}$

${\left({\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}\right)}_{\text{2}}\text{-CH-COOH}$

${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}\text{-C}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{-COOH}$

${\text{CH}}_{\text{3}}\text{-C}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-COOH}$

Explanation of Solution

Eight carboxylic acids with the molecular formula ${\text{C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{2}}$ are given and they are as follows:

(i)Hexanoic acid with six carbon chain:

${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-COOH}$

(ii)4-methyl-pentanoic acid (Five carbon chain and one carbon in branch).

$\text{CH}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-COOH}$$$

(iii)2-methyl-pentanoic acid (Five carbon chain and one carbon in branch).

${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-CH}\left({\text{CH}}_{\text{3}}\right)\text{-COOH}$

(iv)3-methyl-pentanoic acid (Five carbon chain and one carbon in branch).

${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}\text{-CH}\left({\text{CH}}_{\text{3}}\right){\text{-CH}}_{\text{2}}\text{-COOH}$

(v)2,3-dimethyl-butanoic acid (four carbon chain and two carbon in branch).

$\text{CH}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{-CH}\left({\text{CH}}_{\text{3}}\right)\text{-COOH}$

(vi)2-ethyl-butanoic acid (four carbon chain and two carbon in branch).

${\left({\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}\right)}_{\text{2}}\text{-CH-COOH}$

(vii)2,2-dimethyl-butanoic acid (four carbon chain and two carbon in branch).

${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}\text{-C}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{-COOH}$

(viii)3,3-dimethyl-butanoic acid (four carbon chain and two carbon in branch).

${\text{CH}}_{\text{3}}\text{-C}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-COOH}$

Conclusion

The eight carboxylic acids that have the molecular formula ${\text{C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{2}}$ are ${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-COOH}$

$\text{CH}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-COOH}$

${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-CH}\left({\text{CH}}_{\text{3}}\right)\text{-COOH}$

${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}\text{-CH}\left({\text{CH}}_{\text{3}}\right){\text{-CH}}_{\text{2}}\text{-COOH}$

$\text{CH}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{-CH}\left({\text{CH}}_{\text{3}}\right)\text{-COOH}$

${\left({\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}\right)}_{\text{2}}\text{-CH-COOH}$

${\text{CH}}_{\text{3}}{\text{-CH}}_{\text{2}}\text{-C}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{-COOH}$

${\text{CH}}_{\text{3}}\text{-C}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}{\text{-CH}}_{\text{2}}\text{-COOH}$