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Which single criterion allows you to determine whether a process is spontaneous? A. The sign of...

Which single criterion allows you to determine whether a process is spontaneous?

  • A.

    The sign of the equilibrium constant, K.

  • B.

    The sign of the enthalpy change, ΔH.

  • C.

    The sign of the entropy change, ΔS.

  • D.

    The sign of the free energy change, ΔG.

  • E.

    There is no single criterion that allows you to determine if a process is spontaneous.

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Answer #1

D) The sign of the free energy change , \Delta G.

Gibbs free energy change is negative, then the process is spontaneous.

If the change in Gibbs free energy is positive, then the process is non spontaneous.

If the change in Gibbs free energy is equal to zero, then the process is in equilibrium condition.

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