Directions: Given the AH° and AS°, Calculate the AG° values for the following reactions and indicate whether the reaction is spontaneous under standard conditions. AH° (kJ) AS° (J/K) 1. C (graphite) + 2H2 (g) → CH, (g) -74.9 +186 .3 2. CH, CH, (g) → H2 (g) + C2H4 (g) +137 +121 3. N2 (g) +2H2 (g) → N2H4 (I) +50.6 -331

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