Practice Using Bond Enthalpies To Estimate Reaction Enthalpy (3.1.2) - Unit 5: Energetics and Thermochemistry
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Using Bond Enthalpies to Estimate Reaction Enthalpy

Practice - Using Bond Enthalpies to Estimate Reaction Enthalpy

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Practice Questions

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Question 1 Easy

What does bond enthalpy measure?

💡 Hint: Think of it as a way to gauge how strong a bond is.

Question 2 Easy

What is the expected relationship between broken and formed bonds?

💡 Hint: Consider how these processes contribute to overall ΔH.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is bond enthalpy?

The energy to break a bond
The energy to form a bond
The energy in a solution

💡 Hint: Remember, it relates to breaking bonds, not forming them.

Question 2

Is ΔH positive when bonds are formed?

True
False

💡 Hint: Think about whether energy is given off or absorbed during bond formation.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Use average bond enthalpy values to estimate ΔH for the reaction: C₂H₄(g) + H₂(g) → C₂H₆(g). What factors might affect your estimate?

💡 Hint: Don’t forget to write out the energies for each bond type!

Challenge 2 Hard

Given the reaction: 3 O₂(g) + CH₄(g) → 2 CO₂(g) + 2 H₂O(g), list the bonds broken and formed. Estimate ΔH.

💡 Hint: You might need to look up bond energies before calculating.

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