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Consider the reactionCaCO3(s)CaO(s)+ CO2(g)Using the standard thermodynamic data in the tables linked above, calculate the equilibrium constant for this reaction at 298.15K.ANSWER:

Question
  1. Consider the reaction

    CaCO3(s)CaO(s)CO2(g)


    Using the standard thermodynamic data in the tables linked above, calculate the equilibrium constant for this reaction at 298.15K.

    ANSWER:  
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Step 1

The decomposition of calcium carbonate results in the formation of calcium oxide and carbon dioxide gas. The corresponding chemical reaction is shown below:

CaCO, (s) CaO(s)+CO, (g)
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CaCO, (s) CaO(s)+CO, (g)

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Step 2

The Gibb’s free energy for CaCO3(s), CaO(s) and CO2(g) are taken as -1081.4 kJ/mol, -603.3 kJ/mol and -394.36 kJ/mol respectively.

Step 3

The standard Gibb’s free energy for a reacti...

-ΣΥΔG,(product) - ΣνΔG, * (ractant)
Aσ93Κ
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-ΣΥΔG,(product) - ΣνΔG, * (ractant) Aσ93Κ

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