Consider the oxidation of silicon with water vapor at 800 C. a. Find the standard free energy of formation of SiO and HO. b. Combine them to compute AGrxn for the reaction Si + 2HO SiO + 2H c. Evaluate the equilibrium constant and the (H/HO) ratio in equilibrium with silicon and its oxide at 800 C. d. Compute the equilibrium partial pressure of oxygen in the silicon-silica system at 800 C. e. Compute the equilibrium partial pressure of oxygen for a gas mixture at 800 C with an (H/HO) ratio computed in part (c). f. Compare oxygen pressure values in parts (d) and (e).