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प्रश्न
How esters are prepared ?
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उत्तर
Esters are formed when an alcohol reacts with a carboxylic acid in the presence of an acidf catalyst.
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संबंधित प्रश्न
While studying saponification reaction for the preparation of soap, a teacher suggested to a student to add a small quantity of common salt to the reaction mixture. The function of common salt in this reaction is to
(A) reduce the alkalinity of the soap
(B) reduce the acidity of the soap
(C) enhance the cleansing capacity of soap
(D) favour precipitation of soap
List two uses of esters.
When zinc powder is added to acetic acid ______________
(a) the mixture becomes warm
(b) a gas is evolved
(c) the colour of the mixture becomes yellow
(d) a solid settles at the bottom
Give the common names and IUPAC names of the following compounds of CH3COOH.
How is ethanoic acid obtained from ethanol? Write down the chemical equation of the reaction involved.
Consider the following organic compounds:
HCHO, C2H5OH, C2H6, CH3COOH, C2H5CI
Choose two compounds which can react in the presence of conc. H2SO4 to form an ester. Give the name and formula of the ester formed.
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 balanced chemical equations for the following conversion :
Ethanoic acid to ethyl ethanote
Explain the following reaction with an example.
Esterification
Write the characteristics of ethanoic acid.
