At standard conditions, N2 + 2O2 ⇌ 2NO2; ΔG° = 100 kJ/mole NO + ½O2 ⇌ 2NO2; ΔG° = -35 kJ/mole The standard free energy of formation of NO in kJ/mole is___________________?
Correct answer: C
Explanation
We use the given reactions to find $\Delta G_f^\circ(\text{NO})$. The difference between the two $\Delta G_\circ$ values helps determine this.