Answer to Question #92877 in Organic Chemistry for Akay

Question

What relationship exist between the following pairs of structures?
(a). CH3COCH2CH3 and CH3C(OH)=CHCH3
(b). CH3OCH2CH3 and CH3CH2OCH3
(C). CH3CH2COC3H7 and CH3CH2CH2CH2COCH3
(d). CH3CH2COOH and CH3COOCH

Answer 1

(a). CH3COCH2CH3 and CH3C(OH)=CHCH3

Isomers: type of isomerism - tautomerism. These isomers are said to be tautomers.

(b). CH3OCH2CH3 and CH3CH2OCH3

The same substances: molecular formula is the same and structural formula is the same too. The name of a substance is methylethyl ether

(C). CH3CH2COC3H7 and CH3CH2CH2CH2COCH3

Structural isomers: molecular formulas the same but structural formulas are different.

(d). CH3CH2COOH and CH3COOCH

Homologous. These substances have similar structures and these structures differ by one CH2 unit in the main carbon chain.