For which reaction, carried out at standard conditions, would both the enthalpy and entropy changes drive the reaction in the same direction?
a) 2 H2 (g) + O2 (g) → 2 H2O (l) ΔH = - 571.1 kJ
b) 2 Na (s) + Cl2 (g) → 2 NaCl (s) ΔH = - 822.0 kJ
c) N2 (g) + 2 O2 (g) → 2 NO2 (g) ΔH = + 67.7 kJ
d) 2 NH3 (g) → N2 (g) + 3 H2 (g) ΔH = + 92.4 kJ
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