# 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

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Born Haber Cycle concept. You can view video lessons to learn Born Haber Cycle. Or if you need more Born Haber Cycle practice, you can also practice Born Haber Cycle practice problems.

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Based on our data, we think this problem is relevant for Professor Geiger's class at UCB.