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]

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Solution

Explanation: 2 Marks
Equation: 1 Mark

The compound 'A' with molecular formula $C_{2} H_{4} O_{2}$ is ethanoic acid (acetic acid). Upon heating with ethanol (ethyl alcohol) and concentrated sulphuric acid, ethyl ethanoate (ethyl acetate) is formed as the product. It is an ester with pleasant or fruity smell. The reaction is known as esterification reaction.

${CH}_{3} COOH + C_{2} H_{5} OH \to {CH}_{3} {COOC}_{2} H_{5} + H_{2} O$

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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?

Q. 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.

Q. When ethanol reacts with ethanoic acid in the presence of conc.

H_{2} S O_{4}

, a substance with the fruity smell is produced.

(i) State the compounds to which fruity-smelling compounds belong. Write the chemical equation for the reaction and write the chemical name of the product formed.

(ii) State the role of conc.

H_{2} S O_{4}

in this reaction.

An organic acid 'X' is a liquid which often freezes during winter time in cold countries. It has the molecular formula $C_{2} H_{4} O_{2}$ . On warming with ethanol in the presence of a few drops of sulphuric acid, a compound ‘Y’ with sweet smell is formed. (i) Identify X and Y. (ii) Write the chemical equation for the reaction involved.

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An organic compound 'A' has molecular formula C2H4O2and 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]

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]