At 1000 K, the pressure equilibrium constant for the decomposition is . A sealed…
CHEMISTRY · Subjective · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
At 1000 K, the pressure equilibrium constant for the decomposition CaCO3(s)⇋CaO(s)+CO2(g) is Kp=0.11. A sealed vessel at this temperature contains CaCO3(s), CaO(s), and CO2 at a partial pressure of 0.25atm. Compute Qp, compare it with Kp, and predict whether additional CaCO3 will decompose or CaO and CO2 will recombine as the system approaches equilibrium.