Practice Entropy (S) - 4.4.1 | Chapter 4: Energetics/Thermochemistry | IB Grade 12-Chemistry
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Practice Questions

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Question 1

Easy

What unit is entropy measured in?

💡 Hint: Think about how we measure heat and temperature in physics.

Question 2

Easy

Does solid, liquid, or gas have the highest entropy?

💡 Hint: Consider the motion and arrangement of particles in each state.

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 higher entropy value indicate?

  • More order
  • More disorder
  • Unchanged state

💡 Hint: Think about energy and particle movement.

Question 2

True or False: Entropy measures the energy of a system.

  • True
  • False

💡 Hint: Consider what we learned about entropy and energy.

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Challenge Problems

Push your limits with challenges.

Question 1

Imagine a closed container holds 2 moles of gas A and 3 moles of gas B at 298 K. If the mixture decreases in temperature to 273 K without any changes in pressure or volume, discuss the expected change in entropy and why.

💡 Hint: Relate the effect of temperature on particle movement and arrangement.

Question 2

Given standard entropies for X = 200 J K⁻¹ mol⁻¹ and Y = 300 J K⁻¹ mol⁻¹, and the reaction X + Y → Z with standard entropy S°(Z) = 600 J K⁻¹ mol⁻¹. Calculate the entropy change for this reaction.

💡 Hint: Recall the entropy change formula and substitute correctly.

Challenge and get performance evaluation