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प्रश्न
Explain the following reaction with an example.
Esterification
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उत्तर
Substances having ester as the functional group are formed by a reaction between a carboxylic acid and an alcohol. This reaction is known as esterification.
E.g. When ethanoic acid is heated with ethanol in a water bath in the presence of an acid catalyst (concentrated sulphuric acid), ethyl ethanoate and water are formed.
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संबंधित प्रश्न
A student puts a drop of reaction mixture of a saponification reaction first a blue litmus paper and then on a red litmus paper. He may observe that:
(a) There is no change in the blue litmus paper and the red litmus paper turns white.
(b) There is no change in the red litmus paper and the blue litmus paper turns red.
(c) There is no change in the blue litmus paper and the red litmus paper turns blue.
(d) No change in colour is observed in both the litmus papers
Give the common name and IUPAC name of the following compound:
HCOOH
What happens when ethanoic acid reacts with sodium hydroxide? Write equation of the reaction involved.
Give the structural formulae of acetic acid.
What is glacial acetic acid?
What do you notice when acetic acid reacts with metals?
Name the compound formed when acetic acid and ethanol react together.
While studying saponification reactions, the following comments were noted down by the students :
(I) Soap is a salt of fatty acids.
(II) The reaction mixture is basic in nature.
(III) In this reaction heat is absorbed.
(IV) This reaction is not a neutralisation reaction.
Which of these are the correct comments ?
(A) I and III only
(B) I, II and III
(C) II, III and IV
(D) I and II only
How is ethyne prepared in the laboratory?
What is vinegar?
Write the important uses of acetic acid.
Write balanced euation for the following :
Ethane is burnt in air.
Write a fully balanced equation for the folowing case:
Acitic acid is warmed with ethanol in the presence of concentrated sulpheric acid.
Identify the term or substance based on the descriptions given below:
Hydrocarbon containing a triple bond used for welding purposes
Draw the structural formula for the following:
Ethanoic acid
Choose the correct alternative and rewrite the following:
Some acetic acid is treated with solid NaHCO3, the resulting solution will be _________________.
Bubbles are seen in the test tube during the preparation of lime water.
What happens when a small piece of sodium is dropped in ethanol? Write the equation for this reaction.
Why is glacial acetic acid called so?
Write an equation showing saponification.
