Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does a negative Gibbs free energy (ΔG) indicate about a chemical reaction?
💡 Hint: Think about what spontaneous means in a chemical context.
Question 2
Easy
Define enthalpy (ΔH) in the context of thermodynamics.
💡 Hint: Consider energy changes in a chemical reaction.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does a negative change in Gibbs free energy indicate about a reaction?
- The reaction is spontaneous
- The reaction is nonspontaneous
- The reaction is endothermic
- The reaction releases energy
💡 Hint: Think back to the Gibbs free energy equation.
Question 2
True or False: A reaction can be spontaneous even if it is endothermic.
- True
- False
💡 Hint: Consider how entropy changes affect the energy dynamics of reactions.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A reaction has ΔH = -150 kJ and ΔS = +300 J/K. Determine if the reaction is spontaneous at 25°C.
💡 Hint: Convert all units to kJ for consistency.
Question 2
Analyze whether the given reaction will be spontaneous at high temperatures if ΔH = +80 kJ and ΔS = +500 J/K.
💡 Hint: How do positive entropy changes influence spontaneity at varying temperatures?
Challenge and get performance evaluation