parts of the free-response question that require calculations, clearly show the method used and the steps involved in arriving at your answers. You must show your work to receive credit for your answer. Examples and equations may be included in your answers where appropriate. CaCO3(s)⇄CaO(s)+CO2(g)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 2.0mol2.0mol sample of CaCO3(s)CaCO3(s) is placed in a rigid 100.L100.L reaction vessel from which all the air has been evacuated. The vessel is heated to 898°C898°C at which time the pressure of CO2(g)CO2(g) in the vessel is constant at 1.00atm1.00atm, while some CaCO3(s)CaCO3(s) remains in the vessel. (a) Calculate the number of moles of CO2(g)CO2(g) present in the vessel at equilibrium. (b) Write the expression for KpKp, the equilibrium constant for the reaction, and determine its value at 898°C898°C.
For parts of the free-response question that require calculations, clearly show the method used and the steps involved in arriving at your answers. You must show your work to receive credit for your answer. Examples and equations may be included in your answers where appropriate.
CaCO3(s)⇄CaO(s)+CO2(g)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 2.0mol2.0mol sample of CaCO3(s)CaCO3(s) is placed in a rigid 100.L100.L reaction vessel from which all the air has been evacuated. The vessel is heated to 898°C898°C at which time the pressure of CO2(g)CO2(g) in the vessel is constant at 1.00atm1.00atm, while some CaCO3(s)CaCO3(s) remains in the vessel.
(a) Calculate the number of moles of CO2(g)CO2(g) present in the vessel at equilibrium.
(b) Write the expression for KpKp, the equilibrium constant for the reaction, and determine its value at 898°C898°C.
(c) The experiment was repeated, but this time starting with a 4.0mol4.0mol sample of CaCO3(s)CaCO3(s). On the following graph, draw a curve showing how the pressure of CO2(g)CO2(g) would change over time as the vessel is heated to 898°C898°C and equilibrium is established.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
