Vapor pressure

[samanthaywu]

How is vapor pressure impacted by the strength of intermolecular forces? Do compounds of all of the above types of forces have a vapor pressure or do some compounds exert near negligible vapor pressure?

[Jeremy Wei 2C]

Vapor pressure I believe is correlated with evaporation rate (higher vapor pressure indicates higher evaporation rate), so stronger intermolecular forces would result in a lower vapor pressure, since the stronger forces would make it harder for the substance to vaporize.

[Victor Li 2A]

I see vapor pressure as the pressure exerted by gas-phase molecules in a closed system as the molecules move and bounce around. Because intermolecular forces tend to attract molecules with each other and make them move less, intermolecular forces with greater strengths tend to decrease vapor pressure. I don't know if my explanation is correct but it makes sense to me.

[Alan Huang 1E]

I think what we need to remember is that weak intermolecular forces produce higher vapor pressures and strong forces produce lower vapor pressures.