Calcium Carbonate Decomposes at High Temperatures to Give Calcium Oxide

question 87

Short Answer

Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below.
CaCO₃(s)
CaO(s)+ CO₂(g)
The K_P for this reaction is 1.16 at 800°C.A 5.00 L vessel containing 10.0 g of CaCO₃(s)was evacuated to remove the air, sealed, and then heated to 800°C.Ignoring the volume occupied by the solid, what will be the overall mass percent of carbon in the solid once equilibrium is reached?

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