Problem: Which of the following liquids would exhibit the highest vapor pressure at 25.0°C?a) Ethyl alcohol, boiling point = 78.3°Cb) Glycerine, boiling point = 290°C c) Water, boiling point = 100°C d) Ether, boiling point = 34.6°C

🤓 Based on our data, we think this question is relevant for Professor Harris' class at VCU.

FREE Expert Solution

We are asked to identify which substance has the highest vapor pressure at 25°C based on their boiling points. 


Both vapor pressure and boiling point are physical characteristics that are related to the intermolecular forces of attraction (IMFA) that exist between the molecules. 


Vapor pressure is the partial pressure of vapor molecules above the surface of the liquid under the dynamic equilibrium condition of condensation and vaporization. The stronger the IMFA, the lower the vapor pressure of the liquid since the liquid particles cannot easily escape as vapor.

View Complete Written Solution
Problem Details

Which of the following liquids would exhibit the highest vapor pressure at 25.0°C?

a) Ethyl alcohol, boiling point = 78.3°C
b) Glycerine, boiling point = 290°C 
c) Water, boiling point = 100°C 
d) Ether, boiling point = 34.6°C