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Thermochemistry- Finding Delta G

  1. Nov 30, 2011 #1
    1. The problem statement, all variables and given/known data
    Calculate Delta G Degree for
    2Mg(s) + O2(g) -> 2MgO(s)

    2. Relevant equations
    Delta G = (Delta G of products - Delta G of reactants)

    3. The attempt at a solution
    So according to my book's appendix, the dG of Mg is 0, the dG of O2 is 0, and the dG of MgO is -596.6. So I figured the equation would be:
    (2*-596.6) - 0, and that was incorrect. Where am I going wrong?
  2. jcsd
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