Question

The Born-Haber cycle for KCl is evaluated with the following data :

\(ΔfH^\ominus\) for KCl = - 436.7 kJ mol^-1;

Δ_sub\(H^\ominus\) for K = 89.2 kJ mol^-1;

Δ_ionzation \(H^\ominus\) for K = 419.0 kJ mol^-1;Δ_{electron gain} \(H^\ominus\) for Cl_(g)

= –348.6 kJ mol^–1 ; Δ_bond \(H^\ominus\) for Cl₂ = 243.0 kJ mol^–1 

The magnitude of lattice enthalpy of KCl in kJ mol^–1 is ....... (Nearest integer)

Answer 1

Answer is 718

The magnitude of lattice enthalpy of KCl in kJ mol^-1 is 718 (Nearest integer).