For which of the following reactions does an increase in pressure have no effect on the equilibrium? a) 2CO2(g) 4 2CO(g) + O2(g) AH° = -514 kJ b) 2NH3(g) ON2(g) + 3H2(g) AH° = 92 kJ %3D c) 2NO2(g)ON204(g) AH° = -58 kJ d) N2(g) + O2(g) → 2NO(g) AH° = 181 kJ

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