CaCO3(s) CaO(s) + CO₂(g) When heated strongly, solid calcium carbonate decomposes to produce solid calcium oxide and carbon dioxide gas, as represented by the equation above. A 2.0 mol sample of CaCO (8) is placed in a rigid 100. L reaction vessel from which all the air has been evacuated. The vessel is heated to 808 C at which time the pressure of CO₂(g) in the vessel is constant at 1.00 atm, while some CaCO3(s) remains in the vessel. (a) Calculate the number of moles of CO₂(g) present in the vessel at equilibrium. (b) Write the expression for K₂, the equilibrium constant for the reaction, and determine its value at 898 C (c) The experiment was repeated, but this time starting with a 4.0 mol sample of CaCO3(s). On the following graph, draw a curve showing how the pressure of CO₂(g) would change over time as the vessel is heated to 898 C and equilibrium is established. Pressure of CO₂ (atm) 2.00 1.00- 0.00+ 0 Time

CaCO3(s) CaO(s) + CO₂(g) When heated strongly, solid calcium carbonate decomposes to produce solid calcium oxide and carbon dioxide gas, as represented by the equation above. A 2.0 mol sample of CaCO (8) is placed in a rigid 100. L reaction vessel from which all the air has been evacuated. The vessel is heated to 808 C at which time the pressure of CO₂(g) in the vessel is constant at 1.00 atm, while some CaCO3(s) remains in the vessel. (a) Calculate the number of moles of CO₂(g) present in the vessel at equilibrium. (b) Write the expression for K₂, the equilibrium constant for the reaction, and determine its value at 898 C (c) The experiment was repeated, but this time starting with a 4.0 mol sample of CaCO3(s). On the following graph, draw a curve showing how the pressure of CO₂(g) would change over time as the vessel is heated to 898 C and equilibrium is established. Pressure of CO₂ (atm) 2.00 1.00- 0.00+ 0 Time

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter8: Gases

Section: Chapter Questions

Problem 31Q

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