Chapter 12, Problem 86E

Determine the lattice energy of KF(s) from the following data: ${\Delta }_{r}H°[\text{KF}(\text{s})]=-567.3$ kJ mol-1; enthalpy of sublimation of K(s), 89.24 kJ mol-1; enthalpy of dissociation of ${\text{F}}_{\text{2}}\left(\text{g}\right)$ , 159 kJ mol-1; ${\text{F}}_{\text{2}}$ ; E, for K(g), 418.9 kJ mol-1; E.. for F(g), −328kJ mol-1.