USA: +1 (725) 712-1730
USA: +1 (725) 712-1730

Question & Answer: Solid calcium carbonate decomposes to give solid calcium oxide and gaseous oxygen…..

Solid calcium carbonate decomposes to give solid calcium oxide and gaseous oxygen. Write the equilibrium constant for this reaction. Next, calculate the change in Gibbs energy associated with this reaction.

Expert Answer

Answer

    CaCO3(s) <—–> CaO(s) + CO2(g)

DG0rxn = DG0CO2+DG0CaO – DG0CaCO3

             = (-603.3-394.4)-(-1129.1)

             = 131.4 kj

DG0 = – RTlnK

131.4*10^3 = -8.314*273.15lnk

k = equilibrium constant = 7.44*10^-26

Still stressed from student homework?
Get quality assistance from academic writers!
Order now