Problem: Use the Born-Haber cycle to calculate the lattice energy of NaCl.1st Ionization Energy for Na = 495.9 kJ/mol2nd Ionization Energy for Na = 4,560 kJ/molElectron Affinity for Na = 53 kJ/molElectron Affinity for Cl = 349 kJ/molEnergy to dissociate 1/2 mol of Cl2 into Cl atoms = 121.4 kJΔHsublimation (Na) = 108 kJ/molΔHf° (NaCl) = -411 kJ/mol

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Use the Born-Haber cycle to calculate the lattice energy of NaCl.

1st Ionization Energy for Na = 495.9 kJ/mol

2nd Ionization Energy for Na = 4,560 kJ/mol

Electron Affinity for Na = 53 kJ/mol

Electron Affinity for Cl = 349 kJ/mol

Energy to dissociate 1/2 mol of Cl2 into Cl atoms = 121.4 kJ

ΔHsublimation (Na) = 108 kJ/mol

ΔHf° (NaCl) = -411 kJ/mol

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