What are esters? How are esters prepared? Write the chemical equation for the reaction involved. What happens when an ester reacts with sodium hydroxide? Write the chemical equation for the reaction and also state the name and use of this reaction.
Answers
☛ 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. ❤❤
Here is your answer,
Ester is an organic compound made by replacing the hydrogen of an acid by an alkyl or other organic group. Many naturally occurring fats and essential oils are esters of fatty acids.
Esters are produced when carboxylic acids are heated with alcohols in the presence of an acid catalyst. The catalyst is usually concentrated sulphuric acid.
CH3COOH + C2H5OH = CH3COOC2H5 +H2O
NaOH + CH3COOH CH3COONA + H2O
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