Question

Given the ΔH° and ΔS°, calculate the G° values for the following reactions and indicate whether the reaction is spontaneous at standard conditions. If a reaction is not spontaneous, state what may be done to make the reaction spontaneous.

H° (kJ)

a. C (graphite) + 2 H2(g) ➡️ CH4(g) -74.9

b. CH3CH3(g) ➡️ H2(g) + C2H4(g) +137

c. N2(g) + 2 H2(g) ➡️ N2H2(L) +50

S°(kJ)

a. C (graphite) + 2 H2(g) ➡️ CH4(g)

+186.3

b. CH3CH3(g) ➡️ H2(g) + C2H4(g)

+121

c. N2(g) + 2 H2(g) ➡️ N2H2(L)

-331

Answer 1

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