Answer:
Check the explanation
Explanation:
Lets start by drawing the ICE chart
reaction is
...............CO + H2O ========= CO2 + H2
I.............2.6.........3.4..........................0................0
E...........1.88........2.68......................0.72............0.72
since reaction is 1 : 1 if 0.72 atm of H2 are produced then the same amount of CO2 will be formed
calculate Kp this is the relationship between the pressure of products and the pressure of reactants
Kp = Pproducts / Preactants = [Pco2* PH2] / [PCO * PH2O]
Kp = 0.72 * 0.72 / (1.88 * 2.68) = 0.1029
Write the ICE chart again
...............CO + H2O ========= CO2 + H2
I.............1.88.........2.68+1.1.................0.72................0.72
C...........-x............. -x..............................+x........................+x
E......1.88 - x...........3.78-x.....................0.72+x..... ..0.72+x
Kp is = (0.72+x)*(0.72+x) /[ (1.88-x)*(3.78-x) ] = 0.1029
lets say that x is the change of pressure.
If you solve this equation you will get a value of x equal to 0.1
Pressure of CO2 is
0.72 + 0.1= 0.82 atm
using 2 sig figures this would be
8.2x10-1 atm
