Which of the following pairs is/are functional isomers?

butan-2-ol and ethoxy ethane

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ethanal and vinyl alcohol

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acetaldehyde and acetone

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ethanoic acid and methyl formate

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Solution

The correct options are
A butan-2-ol and ethoxy ethane
B ethanal and vinyl alcohol
D ethanoic acid and methyl formate
Functional isomers have the same molecular formula but the different functional group.
A) butan-2-ol and ethoxyethane: $C H_{3} - C H (O H) - C H_{2} - C H_{3}$ and $C_{2} H_{5} - O - C_{2} H_{5}$ ; secondary alcohol and ether groups.
B) ethanal and vinyl alcohol: $C H_{3} C H O$ and $C H_{2} = C H - O H$ ; aldehyde and alcohol groups.
C) acetaldehyde and acetone: $C H_{3} C H O$ and $C H_{3} C O C H_{3}$ ; aldehyde and ketone groups but with different molecular formula.
D) ethanoic acid and methyl formate: $C H_{3} C O O H$ and $H C O O C H_{3}$ ; carboxylic acid and ester group.

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Similar questions

Write the chemical equations for Williamson synthesis of 2 - Ethoxy - 2 - methyl - pentane starting from

ethanol and 2 - Methylpentan - 2 - ol .

C H_{3} O H

C_{2} H_{5} O H

Write structures of the compounds whose IUPAC names are as follows:

(i) 2-Methylbutan-2-ol

(ii) 1-Phenylpropan-2-ol

(iii) 3,5-Dimethylhexane −1, 3, 5-triol

(iv) 2,3 − Diethylphenol

(v) 1 − Ethoxypropane

(vi) 2-Ethoxy-3-methylpentane

(vii) Cyclohexylmethanol

(viii) 3-Cyclohexylpentan-3-ol

(ix) Cyclopent-3-en-1-ol

(x) 3-Chloromethylpentan-1-ol.

Write structures of the compounds whose IUPAC names are as follows.
(a). 2-methylbutan-2-ol

(b). 1-phenylpropan-2-ol

(c). 3,5-dimethylhexane-1,3,5-triol

(d). 2,3-diethylphenol

(e). 1-ethoxypropane

(f). 2-ethoxy-3-methylpentane

(g). Cyclohexylmethanol

(h). 3-cyclohexylpentan-3-ol

(i). Cyclopent-3-en-1-ol

(j). 3-chloromethylpentan-1-ol

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