Considering the given equation as 4FeS2 + 11O2 ----> 2Fe2O3 + 8SO2 it is observed that A production error leads to the S2- being placed in a vessel 750 litres with insufficient O. initially it is noted that The partial pressure of Oxygen=0.44atm , total pressure =1.05atm with the balance Nitrogen. This process of reaction runs until eighty five of the Oxygen is used and the vessel get cooled to its starting or initial temperature. Determine the partial pressure and total pressure of each gas in the vessel.