Questions 22-25 refer to the following information. N2O4(g) ⇄ 2 NO2(g) Kp = 3.0 at 70°C colorless br — Thermodynamics Chemistry Question
Question
Questions 22-25 refer to the following information.
N2O4(g) ⇄ 2 NO2(g) Kp = 3.0 at 70°C
colorless brown
A mixture of NO2(g) and N2O4(g) is placed in a glass tube and allowed to reach equilibrium at 70°C, as represented above.
Which of the following statements about ΔH° for the reaction is correct?
A.
ΔH° < 0 because energy is released when the N–N bond breaks.
B.
ΔH° < 0 because energy is required to break the N–N bond.
C.
ΔH° > 0 because energy is released when the N–N bond breaks.
D.✓ Correct
ΔH° > 0 because energy is required to break the N–N bond.
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