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प्रश्न
Explain esterification reaction with the help of a chemical equation. Describe an activity to show esterification.
उत्तर
The reaction of carboxylic acid with alcohol forms an ester. For example, ethanol reacts with ethanoic acid in the presence of an acid catalyst to give sweet smelling substance, i.e. an ester which in this case will be ethylethanoate.
CH3-COOH + CH3-CH2-OH →Acid CH3-COO-CH2-CH3 + H2O
Ethanoic acid Ethanol Ethyl ethanoate (Ester)
This reaction is known as esterification reaction.
The activity to show the formation of an ester is as follows:
1. Take 1 ml of ethanol (absolute alcohol) + 1 ml of glacial acetic acid in a boiling tube and mix the contents well.
2. Add few drops of concentrated H2SO4 to it.
3. Warm the contents on a water bath for a few minutes (at least 5 minutes).
4. Now pour the solution in a beaker containing 20-50 ml of water.
5. You will observe a sweet-fruity smell indicating the formation of an ester.
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संबंधित प्रश्न
Which of the following sets of materials can be used for conducting a saponification reaction for the preparation of soap?
(a) Ca(OH)2 and neem oil
(b) NaOH and neem oil
(c) NaOH and mineral oil
(d) Ca(OH)2 and mineral oil
State one use of esterfication process.
What is saponification? Write the chemical equation of the reaction involved in this process. Name all the substances which take part in this process and also those which are formed.
Explain the cleansing action of soap. Draw diagrams to illustrate your answer.
Explain why synthetic detergents are superior to soap.
Arrange the following statements in correct sequence
- Pour that solution into an empty matchbox, soap can be obtained after drying.
- Take the necessary quantity of water in a jar.
- Then add coconut oil drop by drop and stir it well.
- Add concentrated sodium hydroxide in the jar and allow it to cool.
- Try this soap to wash your hand kerchief.
- Cover your work area with old newspaper.
We are using ______ to remove strong stains on the clothes.
How does soap clean clothes?
______ are substances which can undergo chemical changes to produce certain materials.
What are soaps?
