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.

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Solution

Ethene is an unsaturated hydrocarbon because it contains a double bond between the Carbon-Carbon atoms.
Ethene has the molecular formula of $(C_{2} H_{4})$ .
The dehydration of alcohol gives the unsaturated alkene as the major product.
Ethene is formed when Ethanol $(C_{2} H_{5} OH)$ is dehydrated by concentrated Sulphuric acid $(H_{2} {SO}_{4})$ .
The balanced chemical equation of dehydration of Ethanol is written as:
${CH}_{3} {CH}_{2} OH \overset{Conc . H_{2} {SO}_{4}}{\to} {CH}_{2} = {CH}_{2} + H_{2} O (Ethanol) (Ethene) (Water)$
Therefore, Ethene is formed when Ethanol is dehydrated by concentrated Sulphuric acid.

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Similar questions

Q. The list of some organic compounds is given below:
ethanol, ethane, methane, ethyne, and ethene
From the above list, name a compound:
(i) formed by the dehydration of ethanol by concentrated sulphuric acid.
(ii) which forms methanoic acid on oxidation in the presence of copper at 200°C.
(iii) which has vapour density 14 and turns acidic potassium permanganate colourless.
(iv) which forms chloroform on halogenation in the presence of sunlight.
(v) which decolourises bromine solution in carbon tetrachloride.

When ethanol is heated with concentrated sulphuric acid at $170^{\circ} C,$ it gets converted into ethene. In this reaction, concentrated sulphuric acid acts as :
(a) oxidising agent (b) catalyst (c) dehydrating agent (d) reducing agent

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).

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

It forms Methanol on oxidation in the presence of copper at $200 ° C$ .

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

Its vapor density is $14$ and its decolorizes alkaline solution of potassium permanganate.

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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.

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.