Question

A fuel gas containing 40.00 mole% methane and the balance ethane is burned completely with pure oxygen at 25.00°C, and the products are cooled to 25.00°C.

A. Suppose the reactor is continuous. Take a basis of calculation of 1.000 mol/s of the fuel gas, assume some value for the percent excess oxygen fed to the reactor (the value you choose will not affect the results), and calculate -Q?(kW), the rate at which heat must be transferred from the reactor if the water vapor condenses before leaving the reactor and if the water remains as a vapor.

B. Now suppose the combustion takes place in a constant-volume batch reactor. Take a basis of calculation 1.000 mol of the fuel gas charged into the reactor, assume any percent excess oxygen, and calculate –Q(kJ) for the cases of liquid water and water vapor as products.

Answer 1