Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is an exothermic reaction?

๐Ÿ’ก Hint: Think about energy release.

Question 2

Easy

What does a negative ฮ”H indicate?

๐Ÿ’ก Hint: Consider the heat flow direction.

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What do exothermic reactions do?

  • Release heat
  • Absorb heat
  • Neither

๐Ÿ’ก Hint: Think about the energy flow.

Question 2

True or False: A negative ฮ”H indicates an endothermic process.

  • True
  • False

๐Ÿ’ก Hint: Revisit the definition of ฮ”H signs.

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Challenge Problems

Push your limits with challenges.

Question 1

A reaction releases 1500 J of heat. Is this reaction exothermic or endothermic? Justify your answer.

๐Ÿ’ก Hint: Recall the definitions of exothermic and endothermic reactions.

Question 2

Consider the enthalpy change for the combustion of propane (Cโ‚ƒHโ‚ˆ). If 1 mole of propane releases 2044 kJ of heat, what is the ฮ”H for this reaction? Explain your reasoning.

๐Ÿ’ก Hint: Remember that energy released is indicated by a negative ฮ”H.

Challenge and get performance evaluation