The AHsol for NaF is 82 kJ/mol, and the lattice energy is –923 kJ/mol. If the hydration enthalpy of sodium is 21 kJ/mol more than the hydration enthalpy of fluoride, what are the hydration enthalpies for the sodium and fluoride ions? Use A
Hsol = - Hat+ H hydr
O sodium: -841 kJ/mol; fluoride: -862 kJ/mol
O sodium: -431 kJ/mol; fluoride: -410 kJ/mol
Osodium: -410 kJ/mol; fluoride: -431 kJ/mol
O sodium: -389 kJ/mol; fluoride: -410 kJ/mol