At 650°C the Kp for the reaction CaCOa(s) = CaOls) + CO,lg) is 1.4 x 103. A chemist preformed the reaction in a 45.0L vessel at 650°C. After a significant amount of time had passed the chemist analyzed the reaction vessel and found 696 g CaCO3, 35.5 g CaO and 46.3 g CO2. a. Write the Q, expression for the reaction. b. Determine the partial pressure of CO2 in the reaction vessel. Is the reaction at equilibrium? If the reaction is not at equilibrium determine whether the system will shift to the reactants or the products to achieve equilibrium? d. Explain why the masses provided for both CaCO3 and CaO were not needed to solve part c. C. FIVE STAR. *****

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