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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the standard enthalpy of formation (ΔH_f°)?
💡 Hint: Think about the formation process from elements.
Question 2
Easy
How do you determine if a reaction is exothermic?
💡 Hint: Recall the sign of ΔH for reactions that release heat.
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 ΔH_rxn°?
- The enthalpy change at constant pressure
- The enthalpy change at constant volume
- The internal energy change
💡 Hint: Recall that ΔH is associated with pressure changes.
Question 2
True or False: A negative value for ΔH indicates that the reaction is endothermic.
- True
- False
💡 Hint: Think about how heat is exchanged in reactions.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given the reaction: C(s) + O₂(g) → CO₂(g) with known ΔH_f° values, calculate the standard enthalpy change.
💡 Hint: You will need to reference enthalpy values for each reactant and product.
Question 2
Evaluate the ΔH of a reaction where ΔH_f° for reactants and products are provided in a table.
💡 Hint: The key operation here is maintaining focus on stoichiometry.
Challenge and get performance evaluation