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Spontaneity of Reactions &

Spontaneity of Reactions &. Free Energy is the energy that is available to do work. D G= D H- T D S. Free Energy. Spontaneous reactions occur naturally without the addition of heat or other conditions. Spontaneous reactions favor the formation of products Keq >1

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Spontaneity of Reactions &

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  1. Spontaneity of Reactions &

  2. Free Energy is the energy that is available to do work. • DG= DH- TDS Free Energy

  3. Spontaneous reactions occur naturally without the addition of heat or other conditions. Spontaneous reactions favor the formation of products Keq >1 • And the Value for DG is negative • Non- spontaneous reactions do favor the formation of reactants Keq <1, and DG is positive. These reactions can become spontaneous with the addition of heat. Spontaneous vs. nonspontaneous reactions

  4. The universe moves toward disorder. • Solids most ordered so they have less entropy than a liquid, which in turn is more ordered than a gas. Entropy

  5. You can calculate the standard state for G, S and H from standard formation tables: DGfo = SDGfoproducts – SDGforeactants DSfo= SDSfoproducts – SDSforeactants DHfo= SDHfoproducts – SDHforeactants Standard States

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