CHEM 101 - Calculating Lattice Energy Using the Born Haber Cycle Example 2

In this example, we calculate the lattice energy of aluminum oxide using the Born-Haber cycle, an application of Hess's Law.

Calculate the lattice energy for Al2O3 in kJ/mol.
The sublimation energy for aluminum is 330 kJ/mol
The 1st ionization energy of aluminum is 578 kJ/mol
The 2nd ionization energy of aluminum is 1830 kJ/mol
The 3rd ionization energy of aluminum is 2750 kJ/mol
The bond energy for O=O is 498 kJ/mol
The first electron affinity for O is –142 kJ/mol
The second electron affinity for O is +844 kJ/mol
The enthalpy of formation for Al2O3 is –1677 kJ/mol