The table included below shows the relative mole percentages of C O 2 ( g ) and

Question

The table included below shows the relative mole percentages of CO2(g) and CO(g) at a total pressure of 1 atm for several temperatures. Calculate the value of Kp at 850 K. Temperature (C) CO2 (mol %) CO (mol %) 850 6.23 93.77 950 1.32 98.68 1050 0.37 99.63 1200 0.06 99.94 C(s)+CO2(g)2CO(g) Calculate the value of Kp at 950 K. The table included below shows the relative mole percentages of CO2(g) and CO(g) at a total pressure of 1 atm for several temperatures. Calculate the value of Kp at 850 K. Temperature (C) CO2 (mol %) CO (mol %) 850 6.23 93.77 950 1.32 98.68 1050 0.37 99.63 1200 0.06 99.94 C(s)+CO2(g)2CO(g) Calculate the value of Kp at 950 K. Temperature (C) CO2 (mol %) CO (mol %) 850 6.23 93.77 950 1.32 98.68 1050 0.37 99.63 1200 0.06 99.94

Explanation / Answer

Calculate Kp at

Kp = CO^2 / (CO2)

a) 850 K

assume a basis of 100 mol:

P = 1 atm so

P-CO2 = 6.23/100*1 = 0.0623 atm

P-CO = 93.77/100*1 = 0.9377 atm

substitutein Kp

Kp = (0.0623^2)/0.9377

Kp = 0.0041391

b)

at T = 950

assume a basis of 100 mol:

P = 1 atm so

P-CO2 = 1.32/100*1 = 0.0132 atm

P-CO = 98.68/100*1 = 0.9868atm

substitutein Kp

Kp = (0.0132^2)/0.9868

Kp = 0.0001765

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