Other questions in this quiz

2. Which of these statements is not related to entropy

  • An Isolated system spontaneously passes to the most probable state (a macroscopic state with the highest no. of microscopic state)
  • Inequality of Clausius - (when energy changes form- some part is lost as entropy)
  • Entropy increases until equilibrium is reached in an isolated system
  • At equlibrium entropy always decreases in an isolated sytsem
  • Change in S> change in H / T
  • Entropy never decreases in an isolated system
  • S= Kb ln W

3. What does Gibbs energy express?

  • it expresses the energy that can NOT be converted during a chemical reaction to useful (pressure volume) work
  • it expresses the energy that can be converted during a chemical reaction to useful (pressure volume) work
  • it expresses the energy that can be converted during a chemical reaction to useful (non pressure volume) work
  • it expresses the energy that can NOT be converted during a chemical reaction to useful (non pressure volume) work

4. Which of these systems is incorrect?

  • Closed system - Matter and energy not exchanged with the surroundings
  • Open System - exchange of matter and energy with the surroundings
  • Isolated system - Matter and energy not exchanged with the surroundings

5. Which of these is NOT an expression for Change in Gibbs energy?

  • ΔG = ΔU + QW
  • ΔG=∑ΔG(f-products)−∑ΔG(f-reactants)
  • ΔG=ΔH−TΔS
  • ΔG=−nFE (Faraday's constant for redox reactions)
  • ΔG=ΔG0+RTlnQ

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