Question

calculate lattice energy of nacl
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Answer 1

Answer:

For NaCl, the lattice dissociation enthalpy is +787 kJ mol-1. You should talk about "lattice formation enthalpy" if you want to talk about the amount of energy released when a lattice is formed from its scattered gaseous ions. For NaCl, the lattice formation enthalpy is -787 kJ mol-1.