the-lattice-energy-of-cucl2-s-is-2824-kj-mol-use-the-born-haber-cycle-to-determi

Question

The lattice energy of CuCl₂(s) is 2824 kJ/mol. Use the Born-Haber cycle to determine the ΔH°_f for CuCl₂(s) from its elements. Compare this with the ΔH°_f for CuCl(s) (–137.2 kJ/mol) and determine which compound is more stable.

Table showing steps of the Born-Haber cycle for CuCl2 with energy values.

Accepted Answer

ΔH°_f of CuCl₂(s) = –237.8 kJ/mol; CuCl₂(s) is more stable.

Answer

ΔH°_f of CuCl₂(s) = 139.1 kJ/mol; CuCl(s) is more stable.

Answer

ΔH°_f of CuCl₂(s) = –195.7 kJ/mol; CuCl₂(s) is more stable.

Answer

ΔH°_f of CuCl₂(s) = 103.2 kJ/mol; CuCl(s) is more stable.