試題詳解

9. Please use the following data to estimate ∆H_f^o 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, -349 kJ/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