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AP Chemistry Flashcards: Bond Enthalpies

Study Bond Enthalpies in AP Chemistry with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

How does bond strength relate to bond enthalpy?

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ANSWER

Stronger bonds have higher bond enthalpies. Higher enthalpy means more energy needed to break the bond.

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AP Chemistry: Thermochemistry

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What this deck covers

This deck focuses on Bond Enthalpies, giving you a quick way to review the definitions, rules, and examples that matter most for AP Chemistry.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 14Practice questions for this set
Use average bond enthalpies to estimate ΔH\Delta H for the reaction H2(g)+Cl2(g)→2HCl(g)\mathrm{H_2(g) + Cl_2(g) \rightarrow 2HCl(g)}. The average bond enthalpies are: H−H=436 kJ/mol\mathrm{H-H}=436\ \text{kJ/mol}, Cl−Cl=243 kJ/mol\mathrm{Cl-Cl}=243\ \text{kJ/mol}, and H−Cl=431 kJ/mol\mathrm{H-Cl}=431\ \text{kJ/mol}. What is the estimated enthalpy change, ΔH\Delta H, for the reaction?
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