What is the boiling point trend among alcohols, ethers, and alkanes?

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Question: What is the boiling point trend among alcohols, ethers, and alkanes?

Options:

Correct Answer: Alcohols > Ethers > Alkanes

Solution:

Alcohols have higher boiling points than ethers and alkanes due to hydrogen bonding.

What is the boiling point trend among alcohols, ethers, and alkanes?

What is the boiling point trend among alcohols, ethers, and alkanes?

Correct Answer: Alcohols have higher boiling points than ethers and alkanes.

Step 1: Understand what boiling point means. It is the temperature at which a liquid turns into vapor.
Step 2: Know the three types of compounds we are comparing: alcohols, ethers, and alkanes.
Step 3: Learn that alcohols contain an -OH (hydroxyl) group, which allows them to form hydrogen bonds.
Step 4: Recognize that hydrogen bonds are strong attractions between molecules, which require more energy (heat) to break.
Step 5: Understand that ethers have an -O- (ether) group but do not form hydrogen bonds as strongly as alcohols.
Step 6: Realize that alkanes are made of carbon and hydrogen only and do not have any functional groups that can form hydrogen bonds.
Step 7: Compare the boiling points: since alcohols can form hydrogen bonds, they have higher boiling points than ethers and alkanes.
Step 8: Conclude that the trend is: Alcohols > Ethers > Alkanes in terms of boiling points.

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