15. The methane in natural gas is an important feedstock for producing industrial chemicals, including H2 gas. a) Calculate the G0rxn for the reaction below: [2 marks] CH4(g)+H2O(g)CO(g)+3H2(g) b) To drive the above non-spontaneous reaction, the CO that is produced can be oxidized to CO2 by using more steam: CO(g)+H2O(g)CO2(g)+H2(g) Calculate the Grxn for this reaction. [2 marks] c) Combine the two chemical reactions and write the chemical equation of the overall reaction. [2 marks] d) Calculate the Grxn for the overall reaction. Is it spontaneous under standard conditions? [2 marks] e) If the temperature were increased to 500C, would this make the reaction more or less spontaneous? Justify your answer. [3 marks]