Problem: At the same pressure, which of the following substances will have the highest boiling point (O2. CH4, NH3, CO2)A) O2B) CH4C) NH3D) CO2

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):

1Ion-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 pointsThis is because they require more energy to be able to break the bonds during the phase transition.


So, we need to identify which among the given compounds has the strongest intermolecular forces.

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Problem Details

At the same pressure, which of the following substances will have the highest boiling point (O2. CH4, NH3, CO2)

A) O2

B) CH4

C) NH3

D) CO2

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