Explain esterification reaction with the ...

CBSE Class 10 Science 2017 Outside Delhi Term II Set 2 Paper

Question : 8 of 12

Marks: +1, -0

Explain esterification reaction with the help of a chemical equation. Describe an activity to show esterification.

Solution:

The reaction of carboxylic acid with alcohol forms an ester. This process of formation of ester is called esterification.

\mathrm{CH}_3\mathrm{COOH}\;+\;\mathrm{CH}_3\mathrm{CH}_2\mathrm{OH}\; ightarrow\;\mathrm{CH}_3\mathrm{COOCH}_2\mathrm{CH}_3+\mathrm{H}_2\mathrm{O}

Activity :

(i) Take

1\ \mathrm{ml}

of ethanol and

1\ \mathrm{ml}

of glacial acetic acid in a boiling tube and mix the contents well.

(ii) Add few drops of conc.

\mathrm{H}_2\mathrm{SO}_4

to it.

(iii) Warm the contents on a water bath for a few minutes.

(iv) Now pour the solution in a beaker containing

20-50\ \mathrm{mL}

of water.

(v) A sweet fruity smell indicating formation of an ester is observed.

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