2CO + O2------>Â Â Â Â 2CO2
2 moles     1 mole
4.3 atm      2.5 atm Â
0 Â Â initial
-4.3 atm    - 2.15
atm        Â
4.3atm   change
0Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
0.35atm         4.3
atm at euilibrium
from the balanced equation
2 moles of CO react with 1 moles of O2
4.3 atm of CO react with = 4.3/2 = 2.15 atm of O2
Here limiting reagent is CO
2 moles of CO react with O2 to form 2 moles of CO2
4.3 atm of Co react with O2 to form 4.3 atm of CO2
remaing pressure of O2 = 2.5-2.15 = 0.35 atm
total pressure of the flask = PO2+ PCO2
                   Â
= 0.35 + 4.3= 4.65 atm
