Which of the following liquids would you expect to have the lowest vapor pressure at room temperature?
A) Ethylene glycol (bp,198°C)
B) Benzene (bp,80°C)
C) Ethanol (bp,78.3°C)
D) Chloroform (bp,62°C)
E) n-pentane (bp,36.1°C)

Question

Quizplus · Accepted Answer

The higher the boiling point of a liquid, the lower its vapor pressure at room temperature. Ethylene glycol has a boiling point of 198°C, which is significantly higher than the other choices, making it the liquid with the lowest vapor pressure at room temperature.

Which of the Following Liquids Would You Expect to Have