3.1 - Bond Enthalpy Basics
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Practice Questions
Test your understanding with targeted questions
What is bond enthalpy?
💡 Hint: Think about what happens when you break a bond.
Why do bond enthalpy values vary?
💡 Hint: Consider different molecules containing the same type of bond.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is bond enthalpy?
💡 Hint: Consider what happens when you need to separate atoms in a bond.
Is ΔH positive or negative for an exothermic reaction?
💡 Hint: Think about how energy flows in an exothermic process.
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Challenge Problems
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Estimate the reaction enthalpy for the combustion of butane: C₄H₁₀(g) + 6 O₂(g) → 4 CO₂(g) + 5 H₂O(g), given average bond enthalpies: C–C = 347 kJ/mol, C–H = 413 kJ/mol, O=O = 498 kJ/mol.
💡 Hint: Ensure you breaking down every bond energy clearly for products and reactants!
Calculate the total energy change of the hydrogenation reaction of a diene compound with given bond enthalpies. Analyze why this estimate might deviate from actual values due to molecular geometry.
💡 Hint: Pay attention to bond type changes during hydrogenation and apply realistic bond strength corrections.
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