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  4. Decreasing order of boiling points among ethanol, butan-1-ol, butan-2-ol and methanol is

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Q. Decreasing order of boiling points among ethanol, butan-1-ol, butan-2-ol and methanol is

Alcohols Phenols and Ethers

Solution:

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.