Question

What is esters? how are esters prepared? write the chemical for the reaction involved? what happens when an esters reacts with sodium hydroxide? write the chemical equation for the reaction and also state the name and use of this reaction?

Answer 1

ANSWER.......

☛ The reaction between Acid and Alcohol to produce ester as the product is called Esterification Reaction.

☛ Esters is a Sweet smelling substance. It is used in perfumes, manufacturing of dye and flavouring agent.

▪▪▪▪ PREPARATION ▪▪▪▪

☛ They are formed when ethanol reacts with ethanoic acid in the presence of acid, as a catalysts(H2SO4).

☛ This reaction resulting in the formation of Esters is known as " Esterification ".

☛ The chemical equation for the reaction involved -
CH3COOH + CH3CH2OH ➡ CH3COOC2H5 + H2O. ( Include H2SO4 as a catalyst. )

•• CH3COOH = Ethanoic acid.
•• CH3CH2OH = Ethanol.
•• CH3COOC2H5 = Ethyl Acetate.

☛ When esters(CH3COOC2H5) with sodium hydroxide(NaOH) forms sodium ethanoate ( CH3COONa) as the main product and ethanol (C2H5OH).

▪ CH3COOC2H5 + NaOH ➡ CH3COONa + C2H5OH + heat.

▪▪ This reaction is known as Saponification Reaction, Alkaline Hydrolysis or Esters Hydrolysis.

▪▪ This reaction is used in the production of soap and hence the name is Saponification Reaction.

▪▪ It is an exothermic reaction since heat is evolved.

❤❤Hope this will help you. ❤❤

☞ ☆☆ @ Mr. Thakur ☆☆

Answer 2

✍HERE IS YOUR ANSWER...⤵⤵
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$\underline{ANSWER}$ ➡

$<b>In chemistry, an ester is a chemical compound derived from an acid.It is made by replacing the hydrogen of an acid by an alkyl or other organic group. Usually, esters are derived from a carboxylic acid and an alcohol.$

Some esters can be prepared by esterification, a reaction in which a carboxylic acid and an alcohol, heated in the presence of a mineral acid catalyst.In this process, carboxylic acid is mixed with alcohol so as to get ester in the presence of an acid. This is an acid catalysed reaction and is also reversible.So, esters are formed when ethanol (CH3CH2OH) with ethanoic acid (CH3COOH) in the presence of acid as catalyst (H2SO4).

The chemical reaction invovled in the preparation of esters known as esterification is : -

CH3CH2OH + CH3COOH $\underline{H2SO4}$----> CH3COOC2H5 + H2O

When ester react with Sodium Hydroxide it formed Glycerol(Ethanol) and a Sodium Salt of Carboxylic Acid (Sodium Ethanoate) .

Reaction is as follows :-

CH3COOC2H5 + NaOH ------------> CH3COONa + CH3CH2OH

This reaction is known as Saponification .

Saponification reaction is used in the preparation of Soaps.

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✝✝…HOPE…IT…HELPS…YOU…✝✝