Question

Identify which two compounds below are constitutional isomers

(CH3)3COCH3

(CH3)2CHOCH3

(CH3)2CHOCH2CH3

Answer 1

(CH₃)₃COCH3₃ and (CH₃)₂CHOCH₂CH₃

Step-by-step explanation:

Isomers are compounds which have the same molecular formula. Constitutional isomers have different connectivity; the atoms are connected in different ways.

1. (CH₃)₃COCH₃

2. (CH₃)₂CHOCH3₃

3. (CH₃)₂CHOCH₂CH₃

Molecules 1 and 3 have the same formula (C₅H₁₂O) and are isomers. Molecule 2 is not an isomer. From the structural formula, it is clear that Molecules 1 and 3 have different connectivity.