Answer to Question #239541 in General Chemistry for Laxus

Question

At 50.° C the vapor pressure of ethanol is 0.30 atm, acetic acid is 0.08 atm, and water is 0.12 atm.

A.Arrange these substances in decreasing order of viscosity forces.

B.Arrange these substances in increasing order of surface tension.

Answer 1

a. In order of increasing rates of evaporation: acetic acid<water<ethanol<acetone (higher values of vapor pressure correspond to higher rates of evaporation);

b. In order of increasing boiling points: acetone<ethanol<water<acetic acid (higher values of vapor pressure correspond to lower values of boiling point).