Calculate the lattice energy of sodium fluoride from the following data: Ionization energy of Na: 496 kJ/mol
Electron affinity of F: -328 kJ/mol
Energy to vaporize Na: 108 kJ/mol
F₂ bond energy: 160 kJ/mol
Energy change for the reaction:

Question

Quizplus · Accepted Answer

The lattice energy can be calculated using the following formula: Lattice energy = (Ionization energy of Na + Electron affinity of F + F₂ bond energy) - Energy to vaporize Na Substituting the given values: Lattice energy = (496 kJ/mol + 328 kJ/mol + 160 kJ/mol) - 108 kJ/mol Lattice energy = 876 kJ/mol Therefore, the best choice is B, which is closest to the calculated value of 876 kJ/mol.

Calculate the Lattice Energy of Sodium Fluoride from the Following