Question:
The major product obtained in the dehydration of ethanol in the presence of \(H_{2}SO_{4}\) at 413 K is
The major product obtained in the dehydration of ethanol in the presence of \(H_{2}SO_{4}\) at 413 K is
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Temperature control is key: lower temperature → ether; higher temperature → alkene.
Updated On: Apr 24, 2026
- Ethanoic acid
- Ethanal
- Ethyne
- Ethoxyethane
- Ethane
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Dehydration of alcohols with H2SO4 gives different products depending on temperature.
Step 2: Detailed Explanation:
At 413 K (140°C), intermolecular dehydration occurs:
\(2CH_3CH_2OH \xrightarrow{H_2SO_4, 413K} CH_3CH_2-O-CH_2CH_3 + H_2O\)
Product is diethyl ether (ethoxyethane).
At 443 K (170°C), intramolecular dehydration gives ethene.
Step 3: Final Answer:
The major product at 413 K is ethoxyethane.
Dehydration of alcohols with H2SO4 gives different products depending on temperature.
Step 2: Detailed Explanation:
At 413 K (140°C), intermolecular dehydration occurs:
\(2CH_3CH_2OH \xrightarrow{H_2SO_4, 413K} CH_3CH_2-O-CH_2CH_3 + H_2O\)
Product is diethyl ether (ethoxyethane).
At 443 K (170°C), intramolecular dehydration gives ethene.
Step 3: Final Answer:
The major product at 413 K is ethoxyethane.
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