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
Define Hess's Law.
💡 Hint: Consider how enthalpy relates to the path of a reaction.
Question 2
Easy
What is a state function?
💡 Hint: Think about properties like temperature or pressure.
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 Hess's Law state?
💡 Hint: Think about the relationship between path and state.
Question 2
When applying Hess's Law, should the enthalpy change sign when a reaction is reversed?
- True
- False
💡 Hint: Consider what happens to energy in reverse reactions.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Determine the overall enthalpy change for a reaction given two pathways: A → B (ΔH = -45 kJ) and B → C (ΔH = +30 kJ). What is the enthalpy change for A → C?
💡 Hint: Focus on adding the enthalpies of the path taken.
Question 2
Using Hess's Law, if the enthalpy changes for C to D is +50 kJ, and D to E is +30 kJ, what is the total for C to E if the path is reversed?
💡 Hint: Remember to flip the signs of any reversed processes.
Challenge and get performance evaluation