The dissociation of calcium carbonate has an equilibrium constant of at 800. °C. a What is for the reaction? = Correct Recall that and are related by the equation: The equation: has . Note that . Applying the relationship: b If you place 28.5 g of in a 9.77-L container at 800. °C, what is the pressure of in the container? Pressure = atm Correct For the dissociation of calcium carbonate: c What percentage of the original 28.5-g sample of remains undecomposed at equilibrium? Percentage = %