A student warmed a neutral organic compound with some ethanoic acid and a little of concentrated sulphuric acid in a test-tube. He observed that vapours having sweet smell (fruity smell) are evolved.
(a) What type of functional group is present in this organic compound?
(b) Give the name and formula of one such organic compound.

Open in App

Solution

(a) The functional group present in the organic compound is hydroxyl group. Fruity smell of the vapours produce indicates the presence of ester group. As ester is a result of condensation reaction between alcohol and carboxylic acids.

(b) For example - ethanol reacts with ethanoic acid/carboxylic acid to produce ethyl ethanoate/ester which has a functional group $(— COO)$ .

$C_{2} H_{5} OH + {CH}_{3} COOH \overset{H_{2} {SO}_{^{4}}}{\to} \underset{Ethyl ethanoate}{{CH}_{3} {COOC}_{2} H_{5}} + H_{2} O$

Suggest Corrections

Similar questions

Q. A neutral organic compound is warmed with some ethanoic acid and a little of conc. H₂SO₄. Vapours having sweet smell (fruity smell) are evolved. What type of functional group is present in this organic compound?

An organic compound 'A' has molecular formula $C_{2} H_{4} O_{2}$ and is acidic in nature. On heating with alcohol and conc. sulphuric acid, vapours with pleasant or fruity smell are given out. What is this chemical compound 'A' and what is the chemical equation involved in the reaction? [3 MARKS]

Q. An organic compound

[A]

having molecular formula

C_{2} H_{7} N

on treatment with nitrous acid gives a compound

[B]

having molecular formula

C_{2} H_{6} O

[B]

on treatment with an organic compound

[C]

gives a carboxylic acid

[D]

and a sweet smelling compound

[E]

. Oxidation of

[B]

with acidified potassium dichromate also gives

[D]

Identify

[A], [B], [C], [D]

and

[E]

An organic compound A (molecular formula $C_{2} H_{4} O_{2})$ reacts with Na metal to form a compound B and evolves a gas which burns with a pop sound. Compound A on treatment with an alcohol C in the presence of a little of concentrated sulphuric acid forms a sweet-smelling compound D (molecular formula $C_{2} H_{6} O_{2})$ . Compound D on treatment with NaOH solution gives back B and C. Indentity A, B, C and D.

Q. An organic compound A (molecular formula C₂H₄O₂) reacts with Na metal to form a compound B and evolves a gas which burns with a pop sound. Compound A on treatment with an alcohol C in the presence of a little of concentrated sulphuric acid forms a sweet-smelling compound D (molecular formula C₃H₆O₂). Compound D on treatment with NaOH solution gives back B and C. Identify A, B, C and D.

Join BYJU'S Learning Program