Practice Bond Enthalpies and Reaction Energetics - 3 | Unit 5: Energetics and Thermochemistry | IB Grade 11: Chemistry
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Bond Enthalpies and Reaction Energetics

3 - Bond Enthalpies and Reaction Energetics

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is bond enthalpy?

💡 Hint: Think about energy changes during chemical reactions.

Question 2 Easy

What is the formula to estimate reaction enthalpy using bond enthalpies?

💡 Hint: Remember to consider both bonds broken and formed.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the definition of bond enthalpy?

The energy required to form a bond
The energy required to break a bond
The total energy of a system

💡 Hint: Consider energy changes associated with bonds.

Question 2

True or False: Average bond enthalpies are used for precise thermodynamic calculations.

True
False

💡 Hint: Think about what influences bond strength.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Calculate and compare the ΔH estimates for the combustion of ethane versus methane, using provided average bond enthalpies for each.

💡 Hint: Focus on counting all bonds for both reactions.

Challenge 2 Hard

Discuss how the enthalpy of formation changes for acetylene when transitioning from gas phase to liquid phase. What implications does this have for your calculations?

💡 Hint: Always think of how states of matter affect energy.

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