Correct option is D
The Correct Answer is: (d) Ethene
Explanation:
When ethanol (C₂H₅OH) is heated at 443 K in the presence of excess concentrated sulphuric acid (H₂SO₄), it undergoes dehydration (removal of water) to form ethene (C₂H₄), an unsaturated hydrocarbon (alkene).
When ethanol (C₂H₅OH) is heated at 443 K in the presence of excess concentrated sulphuric acid (H₂SO₄), it undergoes dehydration (removal of water) to form ethene (C₂H₄), an unsaturated hydrocarbon (alkene).
Reaction:
This is an elimination reaction, where a water molecule is removed from ethanol.
Information Booster:
• This reaction is an example of acid-catalyzed dehydration of alcohol.
• Ethene formed is a colourless and flammable gas, used in the manufacture of plastics like polythene.
• Concentrated H₂SO₄ removes water, favoring formation of unsaturated hydrocarbons.
Additional Information:
- Ethane – Ethane (C₂H₆) is formed by hydrogenation.
- Acetic acid – Acetic acid (CH₃COOH) is formed by oxidation of ethanol.
- Ether – Ether is formed when ethanol reacts with another ethanol molecule under specific conditions.
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