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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define calorimetry.
💡 Hint: Think about what it measures.
Question 2
Easy
What does ΔH represent?
💡 Hint: Consider what happens to heat in reactions.
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 primary purpose of calorimetry?
- To measure pressure changes
- To measure heat changes
- To measure temperature changes
💡 Hint: Think about what type of energy change it assesses.
Question 2
True or False: A bomb calorimeter is used for measurements at constant pressure.
- True
- False
💡 Hint: Consider how the calorimeter is sealed.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Using a coffee-cup calorimeter, 50.0 mL of 1.0 M HCl is mixed with 50.0 mL of 1.0 M NaOH, and the temperature rises from 25.0 °C to 30.0 °C. Calculate ΔH_neut for the reaction, assuming the specific heat of the solution is 4.18 J/(g·°C) and the solution's density is 1.00 g/mL.
💡 Hint: Remember to use the heat capacity and moles of the limiting reactant.
Question 2
Using Hess’s Law, determine the enthalpy change for the reaction 2 NO(g) + O₂(g) → 2 NO₂(g) given the following reactions:
1) N₂(g) + O₂(g) → 2 NO(g) with ΔH = +180.5 kJ.
2) 2 NO(g) + O₂(g) → 2 NO₂(g) with ΔH = -112.0 kJ.
💡 Hint: Keep track of the direction of the reactions you combine.
Challenge and get performance evaluation