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प्रश्न
With a labelled diagram describe in brief an activity to show the formation of ester.
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उत्तर
The activity given below shows the formation of ester :
- Take 1 mL ethanol (absolute alcohol) and 1 mL glacial acetic acid along with a few drops of concentrated sulphuric acid in a test tube.
- Warm in a water-bath for at least five minutes as shown in the figure below.
- Pour into a beaker containing 20-50 mL of water.
- After some time, there will be the formation of a fruity smell compound. The compound formed is an ester.
The formation of the ester can be represented by the chemical reaction as:
\[\ce{\underset{\text{(Ethanoic acid)}}{CH3COOH} + \underset{\text{(Ethanol)}}{C2H5OH}->[conc. H2SO4] \underset{\text{(Ester)}}{CH3COOC2H5} + H2O}\]
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संबंधित प्रश्न
Give a reason for Conductivity of dilute hydrochloric acid is greater than that of acetic acid
Name the gas evolved when ethanoic acid is added to sodium carbonate. How would you prove the presence of this gas?
How is ethanoic acid obtained from ethanol? Write down the chemical equation of the reaction involved.
Ethanol can be oxidized to ethanoic acid. Write the equation and name the oxidizing agent.
Write the names of the first three members of the carboxylic acid series.
Give the structural formulae of acetic acid.
A student takes Na2CO3 powder in a test tube and pours some drops of acetic acid over it. He observes:
(A) no reaction in the test tube
(B) colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) white fumes with smell of vinegar
Give the structural formula of Acetic acid.
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
What happens when a small piece of sodium is dropped in ethanol? Write the equation for this reaction.
