The equilibrium constant for the given reaction. CaCO3(s)⇋CaO(s)+CO2(g) is given by
A
Kc=[CaO][CO2][CaCO3]
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B
Kc=[CaO][CaCO3]
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C
Kc=[CO2]
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D
Kc=[CaO][CO2]
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Solution
The correct option is CKc=[CO2] The equilibrium constant is defined only for gaseous and liquid substances. In the reaction CaCO3 and CaO are in solid state, therefore only concentration of CO2 will contribute for equilibrium constant.