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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is enthalpy?
💡 Hint: Think about heat flow and energy.
Question 2
Easy
Define exothermic reaction.
💡 Hint: It feels warm to the touch.
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 ΔH indicate?
- Endothermic reaction
- Exothermic reaction
- No reaction
💡 Hint: It’s typically associated with burning fuels.
Question 2
True or False: Standard enthalpy of formation values for all elements in their most stable states are zero.
- True
- False
💡 Hint: Think of natural states of common elements.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the ΔH_rxn° for the given reaction: 2 H₂(g) + O₂(g) → 2 H₂O(l) using the known ΔH_f° values.
💡 Hint: Remember to apply coefficients in the calculation.
Question 2
Using Hess’s Law, derive the enthalpy change for the formation of glucose from carbon dioxide and water, reminding yourself of indirect pathways.
💡 Hint: Think about the cycle of creation and breakdown representing sugar synthesis.
Challenge and get performance evaluation