Question:
Decreasing order of boiling points among ethanol, butan-1-ol, butan-2-ol and methanol is
Decreasing order of boiling points among ethanol, butan-1-ol, butan-2-ol and methanol is
Updated On: Jul 6, 2022
- methanol > ethanol > butan-2-ol > butan-1-ol
- butan-2-ol > butan-1-ol > ethanol > methanol
- ethanol > methanol > butan-1-ol > butan-2-ol
- butan-1-ol > butan-2-ol > ethanol > methanol.
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The Correct Option is D
Solution and Explanation
In alcohols, the boiling points increase with increase in the number of carbon atoms due to increase in van der Waals forces. On the other hand it decreases with increase in branching because of decrease in van der Waals forces with decrease in surface area.
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Concepts Used:
Alcohols, Phenols, and Ethers
Alcohol is formed when a saturated carbon atom bonds to a hydroxyl (-OH) group. It is an organic compound that contains a hydroxyl functional group attached to a carbon atom.
Phenol is formed when the -OH group replaces the hydrogen atom in benzene. It is an organic compound in which a hydroxyl group directly attaches to an aromatic hydrocarbon.
Ether is formed when oxygen atom bonds to two alkyl or aryl groups. It is an organic compound that has an oxygen atom that is connected to two aryl and alkyl groups.
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