When ethanol reacts with sulphuric acid it undergoes dehydration reaction to give :

Ethene

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Methane

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Propane

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Ethyne

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Solution

The correct option is A Ethene
Sulphuric acid is a good dehydrating agent which means it has the ability to absorb water. Heating ethanol with hot concentrated sulphuric acid, results in the dehydration of ethanol to give ethene.

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Q. A primary alcohol,

C_{3} H_{8} O (A)

on heating with sulphuric acid undergo dehydration to give an alkene, B. B, when reacted with

H C l

, gave C, which on treatment with aqueous KOH gives compound

D (C_{3} H_{8} O)

.
A and D are:

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

Ethanol undergoes dehydration to form ethene by heating it with:

Q. (a) What happens when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid? Write 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.

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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When ethanol reacts with sulphuric acid it undergoes dehydration reaction to give :

The correct option is A EtheneSulphuric acid is a good dehydrating agent which means it has the ability to absorb water. Heating ethanol with hot concentrated sulphuric acid, results in the dehydration of ethanol to give ethene.

The correct option is A Ethene
Sulphuric acid is a good dehydrating agent which means it has the ability to absorb water. Heating ethanol with hot concentrated sulphuric acid, results in the dehydration of ethanol to give ethene.