Problem: Rank these compounds by boiling point.Select the compound that has the highest boiling point, based on that compound's dominant intermolecular force.A. pentanalB. 1-fluoropentaneC. diethyl etherD. 1-pentanol

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FREE Expert Solution

We’re being asked to identify the compound with the highest boiling point among the given choices.


Recall that there are several types of intermolecular forces (IMF):

1. Ion-dipole interaction – occurs between an ion and a polar covalent compound; strongest IMF

2. Hydrogen bonding – occurs in compounds where hydrogen is directly connected to an electronegative element such as N, O, or F; 2nd strongest IMF

3. Dipole-dipole interaction – occurs between two polar covalent compounds; 3rd strongest IMF

4. Dispersion forces – occurs in all compounds and is the primary IMF exhibited by nonpolar compounds; weakest IMF


Compounds with strong intermolecular forces have high boiling points. This is because they require more energy to be able to break the bonds during the phase transition.


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Problem Details

Rank these compounds by boiling point.

Select the compound that has the highest boiling point, based on that compound's dominant intermolecular force.

A. pentanal

B. 1-fluoropentane

C. diethyl ether

D. 1-pentanol

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Our tutors have indicated that to solve this problem you will need to apply the Intermolecular Forces and Physical Properties concept. If you need more Intermolecular Forces and Physical Properties practice, you can also practice Intermolecular Forces and Physical Properties practice problems.

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Based on our data, we think this problem is relevant for Professor Brown's class at TAMU.