Consider the following information.

• The lattice energy of NaCI is A Hattice = -788 kJ/mol.
• The enthalpy of sublimation of Na is A #sub = 107.5 kJ/mol.
• The first ionization energy of Na is IE, = 496 kJ/mol.
• The electron affinity of Cl is A HBA = -349 kJ/mol.
• The bond energy of Ch, is BE = 243 kJ/mol.

Determine the enthalpy of formation, A H., for NaCI(s).