Module 15: Second Law of Thermodynamics
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Questions and Answers

Which law is based on the principle that 'heat does not spontaneously flow from a colder body to a hotter body'?

  • First Law of Thermodynamics
  • Second Law of Thermodynamics (correct)
  • Third Law of Thermodynamics
  • Zeroth Law of Thermodynamics
  • What does entropy measure in a substance?

  • Volume
  • Temperature
  • Degree of randomness (correct)
  • Pressure
  • In which state of matter is entropy typically the highest?

  • Solids
  • Aqueous ions
  • Liquids
  • Gases (correct)
  • When does a positive change in entropy occur?

    <p>Solid reactants form liquid or gaseous products</p> Signup and view all the answers

    Which type of reaction often results in a decrease in entropy?

    <p>Gasous reactants form solid products</p> Signup and view all the answers

    What happens to energy according to the Second Law of Thermodynamics?

    <p>Energy is transformed, and more and more of it is wasted over time</p> Signup and view all the answers

    Which property is a measure of the disorder present in a substance or system?

    <p>Entropy</p> Signup and view all the answers

    In the context of reactions, what does it mean if a reaction is classified as endothermic?

    <p>It absorbs heat</p> Signup and view all the answers

    What is the minimum work required to carry out a nonspontaneous process in terms of Gibbs Free Energy?

    <p>ΔG &gt; 0</p> Signup and view all the answers

    Which term represents the free energy change when a compound is formed from its elements in their most thermodynamically stable states at standard state conditions?

    <p>Standard Free Energy of Formation</p> Signup and view all the answers

    What is the sign convention for Gibbs Free Energy change (ΔG) in an exergonic reaction?

    <p>Negative</p> Signup and view all the answers

    Which of the following is true about reversible reactions?

    <p>They reach equilibrium where reactant and product concentrations stabilize</p> Signup and view all the answers

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