For the reaction 2C(s) + H2(g) ⇌ C2H2(g), the following thermodynamic data is given:
Substance ΔH° (kJ/mol) ΔS° (J/mol·K)
C(graphite) 5.7 0
H2(g) 130.7 130.7
C2H2(g) 227.4 200.9
The gas constant, R, is 8.314 J/(mol·K).
Calculate ΔH°.
Calculate ΔS°.
Calculate ΔG°.
ΔH° - TΔS°?
Is the reaction spontaneous at room temperature?
Which term describes the reaction, endothermic or exothermic?
What is the equilibrium constant for this reaction at standard conditions?