Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does it mean if ΔG is less than 0?

💡 Hint: Think about reactions that occur naturally.

Question 2

Easy

What is the relationship between ΔG and equilibrium?

💡 Hint: Consider when reactants and products are stable.

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the significance of a negative ΔG?

  • The reaction is non-spontaneous
  • The reaction is spontaneous
  • The reaction is at equilibrium

💡 Hint: Look at definitions of spontaneity.

Question 2

True or False: All spontaneous reactions have a negative ΔH.

  • True
  • False

💡 Hint: Consider both endothermic and exothermic reactions.

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Challenge Problems

Push your limits with challenges.

Question 1

A chemical reaction has ΔH = -120 kJ and ΔS = 0.4 kJ/K. Calculate the temperature at which this reaction becomes non-spontaneous.

💡 Hint: Use the equilibrium temperature formula.

Question 2

Discuss how an increase in temperature might affect a system where ΔH is +30 kJ and ΔS is +0.1 kJ/K. Will it eventually become spontaneous?

💡 Hint: Refer to the influence of temperature on ΔG.

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