We are being asked to determine whether the initial amount of calcium oxide increase, decrease, or remain the same as the system moves toward equilibrium at 900ºC.
We will use the reaction quotient, Q, to determine if a chemical reaction would be at equilibrium or not. The formula for Q is:
Depending on if Q is greater than or less than K our reaction will shift to attain equilibrium by reaching the equilibrium constant K:
At 900ºC, Kp = 1.04 for the reaction
CaCO3(s) ⇌ CaO(s) + CO2(g)
At a low temperature, dry ice (solid CO 2), calcium oxide, and calcium carbonate are introduced into a 50.0-L reaction chamber. The temperature is raised to 900ºC, resulting in the dry ice converting to gaseous CO2. For the following mixtures, will the initial amount of calcium oxide increase, decrease, or remain the same as the system moves toward equilibrium at 900ºC?
c. 0.14 g CaCO3, 5000 g CaO, PCO2 = 1.04 atm
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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.