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Calculate the lattice energies and rank them

The lattice energies of FeCl3, FeCl2, Fe2O3 are

  2631 kJ/mol

5359 kJ/mol

14,774 kJ/mol
asked Jul 13, 2017 in Chemistry by Taylor

1 Answer

Do you need to match the formula to the energy?

Make the ionization equations:

FeCl2 → Fe2+ + 2 Cl-

FeCl3 → Fe3+ + 3 Cl-

Fe2O3 → 2 Fe3+ + 3 O2-

The most negative lattice energy  = the greatest amount of energy released

answered Jul 13, 2017 by Kolton