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 standard enthalpy of formation.
💡 Hint: Refer to the making of substances from their basic elements.
Question 2
Easy
What symbol denotes standard enthalpy changes?
💡 Hint: Think about the notation used to signify standard conditions.
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 is the standard condition for pressure?
- 1 atm
- 1 bar
- 0.5 atm
💡 Hint: Remember the basics of the metric system.
Question 2
True or False: The standard enthalpy of formation for any element in its standard state is zero.
- True
- False
💡 Hint: Think about the foundational principles of formation.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the standard enthalpy change for the reaction
2 H₂(g) + O₂(g) → 2 H₂O(l) using the following values:
ΔH_f°[H₂O(l)] = -285.8 kJ/mol.
Why is this calculation significant in thermochemistry?
💡 Hint: You'll apply the formation values to derive the overall reaction enthalpy.
Question 2
Given the formation enthalpy values of the products and reactants, determine the standard enthalpy of reaction for the following:
N₂(g) + 2 H₂(g) → 2 NH₃(g);
ΔH_f°[NH₃(g)] = -45.9 kJ/mol.
💡 Hint: Focus on ensuring the balanced equation before applying formation values.
Challenge and get performance evaluation