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    Oxygen and Spontaneous Reactions

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    The element oxygen was prepared by Joseph Priestley in 1774 by heating mercury oxide: HgO(s)->Hg(l) + (1/2)O2(g)

    delta H = 90.84 KiloJoule/mol
    S(Hg)=76.02 J/K x mol
    S(o2)=205.0 J/K x mol
    s(HgO) =70.29 J/k x mol

    Estimate the temperature at which this reaction will become spontaneous under standard state conditions.

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    Solution Summary

    The solution provides calculations for finding the temperature at which a reaction where mercury oxide is heated becomes spontaneous.