Practice Measuring Enthalpy Changes Experimentally - 1.3 | Unit 5: Energetics and Thermochemistry | IB Grade 11: Chemistry
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1.3 - Measuring Enthalpy Changes Experimentally

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is a coffee-cup calorimeter used for?

💡 Hint: Think about the type of reactions used in school labs.

Question 2

Easy

Define bomb calorimeter.

💡 Hint: Consider why it is sealed and what types of reactions it measures.

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 type of calorimeter is primarily used for measuring heat changes in aqueous reactions?

  • Coffee-Cup Calorimeter
  • Bomb Calorimeter
  • Thermometer

💡 Hint: Think about the name of the calorimeters.

Question 2

True or False: A bomb calorimeter measures heat changes at constant pressure.

  • True
  • False

💡 Hint: Recall what type of reactions each calorimeter measures.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A coffee-cup calorimeter experiment involves mixing 100 mL of 1 M NaOH with 100 mL of 1 M HCl. The initial temperature is 25°C, and the final temperature after the reaction is 35°C. Calculate the heat change of the reaction. Assume the density of the solution is 1 g/mL and the specific heat capacity is 4.18 J/(g·°C).

💡 Hint: Use the formula for heat absorbed as q = m × c × ΔT.

Question 2

In a bomb calorimeter, 0.50 g of glucose (C6H12O6) is combusted, leading to a temperature rise of 4.0°C in a calorimeter with a heat capacity of 10,000 J/°C. Calculate the heat released during the combustion of glucose.

💡 Hint: Remember to account for the sign of heat flow in bomb calorimetry.

Challenge and get performance evaluation