5.5.c - Bond Enthalpy
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Practice Questions
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What is bond enthalpy?
💡 Hint: Think about the process of breaking bonds.
Define bond dissociation enthalpy.
💡 Hint: Focus on energy changes associated with breaking bonds.
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Interactive Quizzes
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What does bond enthalpy measure?
💡 Hint: Consider the energy flow during bond breaking.
True or False: Mean bond enthalpy is an average of bond energies across similar types.
💡 Hint: Think of how average values work in real life.
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Challenge Problems
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Calculate the overall bond enthalpy change for the reaction 2 H2(g) + O2(g) → 2 H2O(g). Use given bond enthalpies for H-H = 436 kJ/mol and O=O = 498 kJ/mol.
💡 Hint: Remember to sum bond energies carefully.
Discuss how increasing temperature affects the bond enthalpy values and the overall reaction energies.
💡 Hint: Consider how temperature relates to molecular motion.
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