CH3CH2CH3, CH3CH2CH2OH, CH3CH2OCH3  List them in order from highest to lowest in terms of boiling points and highest to lowest terms of their solubility in a polar solvent. 

Expert Answers

An illustration of the letter 'A' in a speech bubbles

We are given three chemical compounds: propane (an alkane), propanol (an alcohol) and ethyl methyl ether (an ether). Among these three, the order of boiling point is:

Boiling Point: Propanol > Ethyl methyl ether > Propane

The boiling point of alcohol is more than that of ether and the alkane...

Unlock
This Answer Now

Start your 48-hour free trial to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.

Start your 48-Hour Free Trial

We are given three chemical compounds: propane (an alkane), propanol (an alcohol) and ethyl methyl ether (an ether). Among these three, the order of boiling point is:

Boiling Point: Propanol > Ethyl methyl ether > Propane

The boiling point of alcohol is more than that of ether and the alkane due to the presence of hydrogen bonds, which results in higher intermolecular attractions in the propanol molecule. Ethers have dipole-dipole interactions, which are weaker than hydrogen bonds and hence have lesser boiling points than comparable alcohols. In the case of alkanes, there are no hydrogen bonds or dipole-dipole interactions and giving them the weakest bonds and thus, the lowest boiling points.

The order of polarity is the same as the order of boiling point. Since polar compounds dissolve in polar solvents, the order of solubility in the polar solvents is:

Propanol > Ethyl methyl ether > Propane

Alkanes and ethers are non-polar and practically insoluble in water (a polar solvent). Alcohols, in comparison, are readily soluble in water.

Hope this helps. 

Approved by eNotes Editorial Team