Calcium oxide, CaO, is manufactured by decomposition of calcium carbonate, CaCO3, in a furnace at 500 K:
Question:
Calcium oxide, CaO, is manufactured by decomposition of calcium carbonate, CaCO3, in a furnace at 500 K:
CaCO3(s)?CaO(s)+CO2(g)
The spontaneity of a reaction can be determined from the free energy change for the reaction, ? G ?.
A reaction is spontaneous when the free energy change is less than zero.
A reaction is nonspontaneous when the free energy change is greater than zero.
A reaction is in equilibrium when the free energy change is equal to zero.
A:
For the decomposition of calcium carbonate, consider the following thermodynamic data:
? H ?rxn | 178.5kJ/mol |
? S ?rxn | 161.0J/(mol?K) |
Calculate the temperature in kelvins above which this reaction is spontaneous.
T = ?
B:
Calculate the equilibrium constant for the following reaction at room temperature, 25 ?C:
CaCO3(s)?CaO(s)+CO2(g)
K = ?Numerical Methods for Engineers
ISBN: 9780071244299
5th Edition
Authors: Steven C. Chapra, Raymond P. Canale