In the conversion from ethanol to ethene, concentrated sulphuric acid is used as:

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Solution

Conversion from ethanol to ethene:
On heating at $170 ° C$ in the presence of an excess of concentrated sulphuric acid $(H_{2} {SO}_{4})$ , ethanol $({CH}_{3} - {CH}_{2} - OH)$ gets dehydrated to give ethene $({CH}_{2} = {CH}_{2})$ .
The reaction of dehydration can be given as:
$\underset{(Ethanol)}{C H_{3} C H_{2} OH} \overset{Conc . H_{2} S O_{4}}{\to} \underset{(Ethene)}{C H_{2} = C H_{2}} + \underset{(Water)}{H_{2} O}$
During the conversion process of ethanol into ethene in the presence of conc. sulphuric acid, a molecule of water is lost.
In this reaction, concentrated sulphuric acid $(H_{2} {SO}_{4})$ acts as a dehydrating agent.
Thus, in the conversion from ethanol to ethene, concentrated sulphuric acid is used as a dehydrating agent.

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Similar questions

Conversion of ethanol to ethene by the action of concentrated sulphuric acid is an example of _________.

Q. Ethanol can be converted to ethene which can then be changed to ethane.
Choose the correct word or phrase from the brackets to complete the following sentences:
(i) The conversion of ethanol to ethene is an example of ........... (dehydration, dehydrogenation).
(ii) Converting ethanol to ethene requires the use of ......... (concentrated hydrochloric acid, concentrated nitric acid, concentrated sulphuric acid).
(iii) The conversion of ethene to ethane is an example of ......... (hydration, hydrogenation).
(iv) The catalyst used in the conversion of ethene to ethane is commonly ............ (iron, cobalt, nickel).

Ethanol can be converted into Ethene which can be changed to Ethane. Choose the correct word or phrase from the brackets to complete the following sentence:

Converting Ethanol to Ethene requires the use of ______(concentrated Hydrochloric acid/concentrated Nitric acid/concentrated Sulphuric acid).

Match the compounds, Ethanol, Methane, Ethanoic acid, Ethyne, and Ethene with the description given below:

Ethene is formed when it is dehydrated by concentrated Sulphuric acid.

Q. Choose the correct word/phrase from within the brackets to complete the following sentences:
(i) The catalyst used for conversion of ethene to ethane is commonly __________ (nickel/iron/cobalt).
(ii) When acetaldehyde is oxidized with acidified potassium dichromate, it forms _________ (ester/ethanol/acetic acid).
(iii) Ethanoic acid reacts with ethanol in presence of concentrated H₂SO₄, so as to form a compound and water. The chemical reaction which takes place is called __________ (dehydration/hydrogenation/esterification).
(iv) Write the equation for the reaction taking place between 1, 2-dibromoethane and alcoholic potassium hydroxide.
(v) The product formed when ethene gas reacts with water in the presence of sulphuric acid is ________ (ethanal/ethanol/ethanoic acid).

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In the conversion from ethanol to ethene, concentrated sulphuric acid is used as:

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