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    Inorganic Thermodynamics: Corresponding Reactions

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    Note: Δ stands in for other symbols. PLEASE SEE ATTACHMENT FOR PROPER FORMULA SYMBOLS.

    Given the following data:

    ΔGf Ca2+(aq) = -553 kJ / mol
    ΔGf Cl-(aq) = -131 kJ / mol
    ΔGf CaCl2(s) = - 748 kJ / mol
    ΔGhyd Ca2+(g) = -1517 kJ / mol
    ΔGhyd Cl-(g) = -334 kJ / mol

    a) Write the reaction corresponding to the dissolution of CaCl2(s) and calculate the corresponding free energy: ΔGsol

    b) Using a Born-Haber cycle (show the actual cycle), write ΔGsol as a function of ΔGhyd Ca2+(g), ΔGhyd Cl-(g) and ΔGlattice CaCl2.

    c) Using the answers in a) and b), calculate ΔGlattice CaCl2

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    Solution Summary

    The solution is given in two attachments as labelled diagrams. The inorganic thermodynamics for corresponding reactions are given.