Question

with a labelled diagram descbribe in brief an activity to show the formation of an ester​

Answer 1

Esters are organic compounds which have sweet smell.

Activity: Aim: To demonstrate the esterification process using ethanol and acetic acid.

Materials Required: Beakers, water, test-tube, ethanol, ethanoic acid, conc. H2SO4.

Procedure : (a) Take 2 ml of ethanol in a test-tube.

(b) Add 2 ml of ethanoic acid to it.

(c) Add a few drops of conc. H2SO4.

(d) Warm it in a beaker containing; water.

(e) Observe the smell of the products formed.

Observation: Pleasant fruity smelling compound (called ester) is formed. Chemical Reaction : CH3COOH+C2H5OH+Conc.H2SO4 → CH3COOC2H5+H2O CH3COOH-Ethanoic acid C2H5OH-Ethanol CH3COOC2H5 -Ethyl ethanoate H2O-Water

Conclusion: Carboxylic acid reacts with alcohol in presence of conc. H2SO4 which act as a dehydrating agent to form esters.

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Answer 2

Answer:

Explanation:

• Esterification is a process in which ester is formed an alcohol and a carboxylic acid.
• It is sometimes referred to as Fischer esterification which is when excess alcohol reacts with carboxylic acid.
• This reaction is normally carried out in the presence of hydrochloric acid which is essentially used as a catalyst.
• The mechanism of this reaction nucleophilic addition-elimination reaction.

For example, CH3CH2OH + CH3COOH ⇒CH3COOCH2CH3