Question Detail

CHM 101 Chemical Thermodynamics Objective Question

Question

In the Haber process example at 300°C (573 K), ΔG was calculated as +21.7 kJ. What does this indicate?
Options
A The reaction becomes more spontaneous at high temperature
B The reaction becomes nonspontaneous at high temperature
Correct Answer
C The reaction is at equilibrium
D The reaction is exothermic
Correct Answer

Option B is the correct answer.

Detailed Explanation

ΔG = +21.7 kJ at 573 K indicates the reaction is nonspontaneous at high temperature. This exothermic reaction with ΔS < 0 is favored at low temperatures.

Hint

The notes provide this interpretation.

Question Info