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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for calculating enthalpy change?
💡 Hint: Think about how you find the difference between the two energies.
Question 2
Easy
Is an exothermic reaction associated with a positive or negative ΔH?
💡 Hint: Recall which type of reaction releases energy.
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 signify?
- Energy is absorbed
- Energy is released
- Energy remains constant
💡 Hint: Think of the implications of energy flow.
Question 2
Which equation correctly expresses enthalpy change for a reaction?
💡 Hint: Look for the structure of the formula!
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a reaction shows a ΔH of -75 kJ, what can you conclude about the energy exchange, and how would you categorize the reaction?
💡 Hint: Reflect on the meaning of a negative ΔH.
Question 2
Given a total energy of reactants at 120 kJ and products at 50 kJ, calculate ΔH and classify the reaction.
💡 Hint: Use the formula and remember the classification rules.
Challenge and get performance evaluation