Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for calculating standard Gibbs free energy change?
💡 Hint: Remember to sum the free energies of products and reactants.
Question 2
Easy
If ΔG < 0, what can we say about the spontaneity of the reaction?
💡 Hint: Think about what a negative Gibbs free energy means.
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Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does a negative ΔG value mean for a reaction?
- The reaction is spontaneous.
- The reaction is at equilibrium.
- The reaction is non-spontaneous.
💡 Hint: Think about what 'spontaneous' means in this context.
Question 2
True or False: ΔG = 0 indicates that the reaction is non-spontaneous.
- True
- False
💡 Hint: Consider the definition of equilibrium.
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Challenge Problems
Push your limits with challenges.
Question 1
Consider the following reaction at standard condition: N₂(g) + 3H₂(g) → 2NH₃(g). If ΔG_f°(NH₃) = -33.0 kJ/mol, ΔG_f°(N₂) = 0 kJ/mol, and ΔG_f°(H₂) = 0 kJ/mol, what is ΔG° for the reaction?
💡 Hint: Apply the Gibbs energy formula and carefully multiply the coefficients.
Question 2
Calculate the equilibrium temperature (T_eq) for the reaction where ΔH = 40 kJ/mol and ΔS = 0.1 kJ/K. What does your answer mean?
💡 Hint: Ensure ΔH and ΔS are in consistent units!
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