Answer:
Step 1: Explanation:
Kc is defined as the amounts of products and reactants present at equilibrium in a reversible chemical reaction at a given temperature.
Kp is the equilibrium constant calculated from the partial pressures of a reaction equation. It is used to express the relationship between product pressures and reactant pressures
Relationship between Kp and Kc is
Kp = Kc (RT)Δn where, Δ n = ( moles of gaseous products - moles of gaseous reactants
Step 2: Solution
Given, CaCO3(s)⇌CaO(s)+CO2(g)
Δ n = ( moles of gaseous products - moles of gaseous reactants )
Δ n = (0+1) -(0) = 1 [ because moles of solid is not considered ]
Since we know
Kp = Kc (RT)Δn
then, Kc = Kp / (RT)Δn
if Δ n = 1 then Kc = Kp / (RT) [ where R = gas constant = 8.314 J / mol.K ]
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