Just to Clarify for the Isomers of C5H12O

Question

Are these the isomers to $\ce{C5H12O}$? If so what makes them so different from each other?

• pentanol
• 2-pentanol
• 3-pentanol
• 3-methyl-2-butanol
• 2-methylbutanol
• methyl butyl ether
• methyl isobutyl ether
• methyl-t-butyl ehter
• methyl-s-butyl ether
• ethylpropyl ether
• ethylisopropyl ether

Answer 1

Corresponding to $\ce{C5H12O}$ there will be a total of 14 structural isomers.

8 isomers with alcohol functional group:

(1) $\ce{CH3CH2CH2CH2CH2OH}$ : n-pentanol

(2) $\ce{CH3CH2CH2CH(OH)CH3}$ : 2-pentanol

(3) $\ce{CH3CH2CH(OH)CH2CH3}$ : 3-pentanol

(4) $\ce{CH3CH2C(CH3)(OH)CH3}$ : 2-methyl-2-butanol

(5) $\ce{CH3CH2CH(CH3)CH2OH}$ : 2-methyl-1-butanol

(6) $\ce{CH3CH(OH)CH(CH3)CH3}$ : 3-methyl-2-butanol

(7) $\ce{CH3CH(CH3)CH2CH2OH}$ : 3-methyl-1-butanol

(8) $\ce{CH3C(CH3)2CH2OH}$ : 2,2-dimethyl-1-propanol

6 isomers with ether functional group:

(1) $\ce{CH3CH2CH2CH2-O-CH3}$ : methyl butyl ether

(2) $\ce{CH3CH2CH2-O-CH2CH3}$ : ethyl propyl ether

(3) $\ce{CH3CH(CH3)CH2-O-CH3}$ : methyl isobutyl ether

(4) $\ce{CH3CH2-O-CH(CH3)CH3}$ : ethyl isopropyl ether

(5) $\ce{CH3CH2CH(CH3)-O-CH3}$ :methyl sec-butyl ether

(6) $\ce{(CH3)3-C-O-CH3}$ : methyl tert-butyl ether