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The conversion of C(diamond) C(graphite) s thermodynamically spontaneous. However, at room temperature and pressure one does not observe diamond converting to graphite. The most reasonable explanation of these data is that the conversion of graphite to diamond is rapid. spontaneity does not imply anything about the rate of reaction. diamond and graphite are at equilibrium. O diamond is thermodynamically stable.

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The conversion of C(diamond) → C(graphite) is thermodynamically spontaneous. However, at room temperature and pressure one doBecause for the conversion of diamond to graphite will have positive Gibbs free energy.

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