Question

Calculate the standard enthalpy of formation of the M2O(s) metal oxide (ΔHf° in kJ/mol) using the following data:


Bond dissociation enthalpy of O2(g) = +498 kJ/mol

First electron affinity of O = -141 kJ/mol

Second electron affinity of O = +744 kJ/mol

Enthalpy of sublimation of M = + 114 kJ/mol

First ionization energy of M = + 450 kJ/mol

Lattice enthalpy of M2O(s) = -2173 kJ/mol