Learning objective
Use lattice enthalpy comparisons to infer covalent character.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
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Flashcards
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Questions
Topic
Thermodynamics (A-level only)
Subtopic
Born-Haber cycles (A-level only)
Study support
Understand this objective
Quick explanation
Use lattice enthalpy comparisons to infer covalent character
- This point belongs to Thermodynamics (A-level only), especially Born-Haber cycles (A-level only).
- You need to be able to use lattice enthalpy comparisons to infer covalent character.
- The key ideas to know are lattice enthalpy.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Born-Haber cycles (A-level only) to exam-style questions, flashcards, and revision notes for Thermodynamics (A-level only).
Quick student answer
Which of the following statements about lattice enthalpy is true?
Direct answer
B. Lattice enthalpy is the energy required to separate one mole of a solid ionic compound into its gaseous ions.
Key terms
- Lattice Enthalpy: The enthalpy change when one mole of an ionic compound is formed from its gaseous ions.
- Born-Haber Cycle: A thermochemical cycle that relates the lattice enthalpy of an ionic compound to other enthalpy changes.
Common trap
Confusing lattice enthalpy with hydration enthalpy: Lattice enthalpy refers to the energy required to form a solid ionic compound from gaseous ions, while hydration enthalpy is the energy change when ions are surrounded by water molecules.
Related questions
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Flashcard prompts
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Revision tools
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Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
Open revision notesRelated learning objectives
- Construct Born-Haber cycles for ionic compounds.
Born-Haber cycles (A-level only)
- Calculate lattice enthalpy from Born-Haber data.
Born-Haber cycles (A-level only)
- Compare experimental and theoretical lattice enthalpies.
Born-Haber cycles (A-level only)
- Explain entropy as a measure of dispersal of energy or disorder.
Entropy and Gibbs free energy (A-level only)
- Calculate entropy changes from standard entropy data.
Entropy and Gibbs free energy (A-level only)