The combustion of a fuel usually results in an increase in pressure when the volume isheld constant, or an increase in volume when the pressure is held constant, because ofthe increase in the number of moles and the temperature. The increase in the pressureor the volume is maximized when the combustion is complete and it occursadiabatically with the theoretical amount of air. Consider the combustion of methylalcohol vapor (CH3OH (g)) with stoichiometric amount of air in a 0.8 L combustionchamber. Initially, the mixture is at 25 ºC and 98 kPa. finda)max pressure that can occur if comb. is constant volumeb) max volume if comb is constant pressure