Quick Answer: Why do different alcohols have different boiling points?

Why do primary alcohols have higher boiling points than secondary and tertiary?

From my understanding, for homologous alcohols, primary alcohols have the highest boiling points, because the OH group is the most accessible for other molecules to hydrogen bond to, therefore stronger intermolecular forces result in higher mp/bp.

Do alcohols have higher boiling points?

The boiling points of alcohols are much higher than those of alkanes with similar molecular weights. … Most of this difference results from the ability of ethanol and other alcohols to form intermolecular hydrogen bonds. (See chemical bonding: Intermolecular forces for a discussion of hydrogen bonding.)

Why do larger alcohols have higher boiling points?

Compared with alkanes, alcohols have significantly higher boiling points. … The large increase in the boiling point of alcohols as the number of hydroxyl groups increases is caused by a greater degree of hydrogen bonding between the molecules.

Do aldehydes have higher boiling points than alcohols?

The polar carbon-to-oxygen double bond causes aldehydes and ketones to have higher boiling points than those of ethers and alkanes of similar molar masses but lower than those of comparable alcohols that engage in intermolecular hydrogen bonding.

Which alcohol is most viscous?

Ethylene glycol is more viscous than ethyl alcohol because ethylene glycol contains two O-H groups (ethyl alcohol contains one O-H group). This results in stronger hydrogen bonding between ethylene glycol molecules.

IT IS IMPORTANT:  Frequent question: What is the difference between Kahlua and coffee liqueur?

Why is ethanol’s boiling point higher than methanol?

Ethanol has higher boiling point than Methanol. Boiling point of alcohol increase as the number of carbons increase. The factors affecting the boiling/melting points of alcohols are not only hydrogen bonds, but also van der Waals dispersion forces and dipole-dipole interactions.