A rigid vessel (i.e., constant volume) contains methane (CH 4 ) and air with an equivalence
ratio of 0.5. The fuel and air mixture are at 25°C and 200kPa. Combustion occurs, and
methane is completely oxidized. Use aftp to answer these questions.
Assuming the "air" was composed of (O 2 + 3.76N2 ).
a) Determine the final pressure in the vessel.
b) Determine the final temperature during the process.
Assuming the "intake air" was composed of (O 2 + 3.76CO 2 ).
c) Determine the final pressure in the vessel.
d) Determine the final temperature during the process.
Compare the results in the two cases and discuss how and why the results of parts (a) and (b)
may differ from parts (c) and (d).