Thermodynamics Quiz
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Questions and Answers

What does the change in Gibbs free energy (∆G) determine?

  • The rate of a chemical reaction
  • Whether a given chemical change is thermodynamically possible or not (correct)
  • The concentration of reactants and products
  • The activation energy of a reaction

    • What does the change in enthalpy (∆H) measure?

  • The activation energy of a reaction
  • The heat content of a system at constant pressure (correct)
  • The concentration of reactants and products
  • The rate of a chemical reaction

    • What does a negative ∆G indicate about the reactants and products?

  • The products have more free energy than the reactants
  • The reaction has stopped
  • The reactants have more free energy than the products (correct)
  • The reaction has reached equilibrium

    • What does a positive change in enthalpy indicate about a reaction?

    <p>The reaction was endothermic (absorbed heat)</p> Signup and view all the answers

    What does entropy measure in a system?

    <p>The system's thermal energy per unit temperature that is unavailable for doing useful work</p> Signup and view all the answers

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