Chapter 14, Problem 14.102QP

At high temperatures, a dynamic equilibrium exists between carbon monoxide, carbon dioxide, and solid carbon.

$\text{C}(s)+{\text{CO}}_2(g)\stackrel{}{\rightleftharpoons }2\text{CO(}g\text{)};\Delta H°=172.5\text{kJ}$

At 900°C, K_c is 0.238.

1. a What is the value of K_p?
2. b Some carbon dioxide is added to the hot carbon and the system is brought to equilibrium at 900°C. If the total pressure in the system is 6.80 atm, what are the partial pressures of CO and CO₂?
3. c How will the equilibrium system respond if additional carbon at 900°C is added to the reaction system? Why?