9. Please use the following data to estimate ∆Hfo for potassium chloride to be__________ kJ/mol.K(s) + (1/2)Cl2(g) → KCl(s); lattice energy, -690. kJ/mol; ionization energy for K, 419 kJ/mol; electron affinity of Cl, -349kJ/mol; bond energy of Cl2, 239 kJ/mol; ethalpy of sublimation for K, 90. kJ/mol.
(A)-161
(B)-1085
(C) 161
(D) 1085
(E)-411