Phase Equilibrium and Thermodynamics Quiz
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Questions and Answers

What does Gibbs free energy (DG) indicate in a chemical reaction or phase change?

  • The rate of the reaction
  • Whether the reaction is spontaneous or not (correct)
  • The amount of energy required for the reaction
  • The amount of energy released during the reaction

    • Which factor characterizes a phase transition without changes in chemical composition?

  • Enthalpy change
  • Gibbs free energy change
  • Related free energy (correct)
  • Entropy change

    • In what scenario does a phase transition predicted to be spontaneous from thermodynamics may practically occur slowly?

  • When the entropy change is significant
  • When the pressure is high
  • When the temperature is low (correct)
  • When the enthalpy change is significant

    • What does Gibbs free energy (DG) not indicate about a chemical reaction?

    <p>The rate of the reaction</p> Signup and view all the answers

    What is the relationship between Gibbs free energy and whether a reaction is spontaneous or not?

    <p>Gibbs free energy determines whether the reaction is spontaneous</p> Signup and view all the answers

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