How is the lattice energy of an ionic compound such as NaCl usually obtained?
Correct answer C. Indirectly, from a Born-Haber cycle using Hess's law
Explanation
Lattice energy cannot be measured directly because gaseous ions cannot easily be combined in a calorimeter. A Born-Haber cycle links it to measurable steps such as atomisation, ionisation and electron affinity.
Answer checked How we write and check questions
Discussion