2. Consider the following reaction taking place in the tuyere zone of an iron-making blast furnace, where the blasts of air (20% oxygen, 3.1 Atmos) first meet solid particles of coke : C(s) +O2 (g) CO2 (g) AG° at 1800°C=-395,200 J/gm mole. Find the ratio of the partial pressures of carbon dioxide and oxygen at equilibrium. Assume that the activity of pure carbon is unity and that the activity of a gas at a given temperature, is equivalent to its partial pressure; (i.e. for Pco2 1 Atmosphere, the gas is in its standard state, and its activity = 1).