Question Detail

CHM 101 Chemical Thermodynamics Objective Question

Question

At its normal boiling point of 80.1°C and 101.3 kPa pressure, benzene vapor condensing to liquid benzene is:
Options
A Spontaneous forward
B Spontaneous in reverse
C At equilibrium
Correct Answer
D Nonspontaneous in both directions
Correct Answer

Option C is the correct answer.

Detailed Explanation

At the normal boiling point and 1 atm pressure, vapor and liquid are in equilibrium. The rates of evaporation and condensation are equal, and ΔG = 0, so neither condensation nor vaporization is favored.

Hint

The notes provide this reasoning.

Question Info