NEET Physics Laws of Thermodynamics MCQ Question
Consider an enthalpy diagram illustrating the Born-Haber cycle for the formation of NaCl. What does the lattice enthalpy represent in this diagram?
The energy change when NaCl dissociates into its gaseous ions.
The energy required to ionize sodium atoms.
The energy change during the sublimation of sodium.
The energy released when Cl2 is dissociated into gaseous Cl atoms.
Correct Answer
Detailed Explanation
The lattice enthalpy in a Born-Haber cycle represents the enthalpy change when one mole of an ionic compound dissociates into its ions in the gaseous state, as described in the NCERT context.
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