Answered

Which two compounds are isomers of each other?
(1) CH3CH2COOH and CH3COOCH2CH3
(2) CH3CH2CHO and CH3COCH3
(3) CH3CHBrCH3 and CH2BrCHBrCH3
(4) CH3CHOHCH3 and CH3CHOHCH2OH

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The isomers mean that these substances have the same constitution but with different structure. So among the four choices, the  (2) CH3CH2CHO and CH3COCH3 is right.

Answer: Option (2) is the correct answer.

Explanation:

When two or more compounds have same chemical formula but different structural arrangements of their atoms then they are known as isomers.

For example, [tex]CH_{3}CH_{2}CHO[/tex] and [tex]CH_{3}COCH_{3}[/tex] both have same chemical formula as [tex]C_{3}H_{6}O[/tex].

The only difference between them is the arrangement of atoms.

Thus, we can conclude that the compounds CH3CH2CHO and CH3COCH3 are isomers of each other.

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