(a) What happens when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid? Write an equation of the reaction involved.
(b) What happens when ethanol is heated with concentrated sulphuric acid at $170^{\circ} C$ ? Write the equation of the reaction which takes place.

Open in App

Solution

(a) when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid a sweet smelling ester called ethyl ethanoate is formed.

$C H_{3} - C O O H + C H_{3} - C H_{2} O H C o n c . H_{2} S O_{4} - ------- \to C H_{3} - C O O - C_{2} H_{5} + H_{2} O$

(b) when ethanol is heated with concentrated sulphuric acid at $170^{\circ} C$ It gets dehydrated to form ethene.

$C H_{3} - C H_{2} O H C o n c . H_{2} S O_{4} a t 170^{o} C - ------------ \to D e h y d r a t i o n C H_{2} = C H_{2} + H_{2} O$

Suggest Corrections

Similar questions

Q. (a) Write the functional groups present in an aldehyde and a carboxylic acid.
(b) How would you distinguish between an alcohol and a carboxylic acid?
(c) What happens when ethanoic acid is warmed with ethanol in the presence of a few drops of concentrated sulphuric acid? Write equation of the reaction involved.
(d) What happens when a piece of sodium metal is added to ethanol? Write equation of the reaction which takes place.
(e) Describe how ethene can be prepared from ethanol? Give an equation of the reaction and state the conditions.

What happens when: (Write chemical reactions as well)
(i) Sodium ethanoate is heated with soda lime.
(ii) Ethanoic acid is warmed with methanol in the presence of concentrated sulphuric acid.

What happens when (Give equations of the chemical reaction)
(i) Sodium ethanoate is heated with soda lime.
(ii) Ethanoic acid is warmed with methanol in presence of concentrated sulphuric acid.

Q. Question 39
Ethene is formed when ethanol at 443k is heated with an excess of concentrated sulphuric acid. What is the role of sulphuric acid in this reaction? Write the balanced chemical equation for this reaction.

Q. What happens when acetic acid is treated with ethanol in the presence of concentrated

H_{2} S O_{4}

? Give the equation of the reaction.

Join BYJU'S Learning Program

(a) What happens when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid? Write an equation of the reaction involved. (b) What happens when ethanol is heated with concentrated sulphuric acid at 170∘C? Write the equation of the reaction which takes place.