Practice Definition: Bond Enthalpy (D) - 3.1.1 | Unit 5: Energetics and Thermochemistry | IB Grade 11: Chemistry
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Definition: Bond Enthalpy (D)

3.1.1 - Definition: Bond Enthalpy (D)

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Practice Questions

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Question 1 Easy

What is bond enthalpy?

💡 Hint: Think about how it relates to breaking a bond.

Question 2 Easy

Why are bond enthalpy values usually positive?

💡 Hint: Consider the energy flow when bonds are broken.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does bond enthalpy measure?

Energy to break bonds
Energy to form bonds
Energy in solution

💡 Hint: Think about the energy input required to break a bond.

Question 2

True or False: Bond enthalpy values can vary depending on the molecular environment.

True
False

💡 Hint: Consider different molecules with the same type of bond.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Estimate the ΔH for the reaction CH₄ + 2 O₂ → CO₂ + 2 H₂O using bond enthalpies.

💡 Hint: List each bond and the number of those bonds carefully!

Challenge 2 Hard

Discuss why average bond enthalpies are not sufficient for every reaction assessment.

💡 Hint: Consider interactions outside of the isolated gas phase.

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