The heat of formation of crystalline sodium chloride is -410 kJ mol-1. The heat of sublimation of sodium metal is 180.8 kJmol-1. The heat ofdissociation of chlorine gas into atoms is 242.7 kJ mol-1. The ionisationenergy of Na and electron affinity of Cl are 493.7kJ and -368.2 kJrespectively. Calculate the lattice energy of NaCl.

The heat of formation of crystalline sodium chloride is -410 kJ mol-1.

1.	The heat of formation of crystalline sodium chloride is -410 kJ mol-1. The heat of sublimation of sodium metal is 180.8 kJmol-1. The heat ofdissociation of chlorine gas into atoms is 242.7 kJ mol-1. The ionisationenergy of Na and electron affinity of Cl are 493.7kJ and -368.2 kJrespectively. Calculate the lattice energy of NaCl.
Answer» 1) The heat of FORMATION of crystalline SODIUM CHLORIDE is -410 kJ mol-1. The heat of sublimation ...