The flue gas of a gas turbine contains water vapor and y_H2O = 0.05. The temperature after the gas turbine outlet, downstream in the process, is 350 K. The flue gas contains minute quantities of sulfur which is present in the fuel. Sulfur can combine with liquid water forming sulfuric acid which is highly corrosive, thus water condensation is unwanted. The flue gas can be modeled as an ideal gas mixture. Calculate the maximum pressure in the stack that will avoid water condensation.