The equations for the heats of the formation of copper (I) oxide,Cu2O and copper(II) oxide,CuO are:

Question

2Cu(s) +1/2 O2(g) CuO(s); ∆Hof =-166.7kj/mol
Cu(s) +1/2 O(g) CuO(s); ∆Hof= -155.2kj/mol
The first and second ionisation energies of copper are 750 and 2000kj/mol respectively;its atomisation energy is 339.3kj/mol.Draw the born haber cycle and calculate the latice energies (∆Hlatt) of two oxides.