Question

Coal gasification can be represented by the equation: 2C(s) + H2(g)yields CH4(g) + CO2(g)

Using the following information, calculate delta G for the directcombustion of carbon.

CO(g) + H2(g) yields C(s) + H2O(g) delta G = -91.4kJ
CO(g) + H2O(g) yields CO2(g) + H2(g) delta G = -28.6kJ
CO(g) + 3H2(g) yields CH4(g) + H2O(g) delta G = -142.2 kJ