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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
The molecular formula of acetic acid is _________ .
(a) CH3COOH
(b) CH3 – CH3
(c) C6H6
(d) C2H4
For preparing soap in the laboratory we require an oil and a base. Which of the following combinations of an oil and a base would be best suited for the preparation of soap?
(a) Castor oil and calcium hydroxide
(b) Turpentine oil and sodium hydroxide
(c) Castor oil and sodium hydroxide
(d) Mustard oil and calcium hydroxide
Name two oxidising agents which can oxidise ethanol to ethanoic acid.
How does ethanoic acid react with sodium hydrogen carbonate? Give equation of the reaction which takes place.
How would you distinguish between ethanol and ethanoic acid by chemical test?
An organic compound A (molecular formula C2H4O2) reacts with Na metal to form a compound B and evolves a gas which burns with a pop sound. Compound A on treatment with an alcohol C in the presence of a little of concentrated sulphuric acid forms a sweet-smelling compound D (molecular formula C3H6O2). Compound D on treatment with NaOH solution gives back B and C. Identify A, B, C and
What do you observe when acetic acid is added to a neutral FeCl3 solution?
What is the main constituent of vinegar?
What type of compound is formed by the reaction between acetic acid and an alcohol?
Write the chemical equation for the following:
Combustion of methane
Write a fully balanced equation for the folowing case:
Acitic acid is warmed with ethanol in the presence of concentrated sulpheric acid.
Write a balanced chemical equation for the following:
Monochloroethane is hydrolysed with aqueous KOH.
Write the molecular formula of the given compound.
Sodium ethanoate
Ester is a sweet-smelling compound.
Give a chemical reaction in which a catalyst is used.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
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The reaction between acetic acid and sodium carbonate is shown in the following figure.

Answer the questions with the help of a diagram.
- Which gas does come out as effervescence in the big test tube?
- What is the colour change in the lime water present in the small test tube?
- Write the related reaction.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
