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Valesia S.

asked • 05/13/20

Lattice energy and heat of formation

Use the following data to estimate change in heat of formation for potassium chloride.

K(s) +1/2 Cl2---> KCl(s)

Lattice energy= -690. kJ/mol

Ionization energy for K = 419 kJ/mol

Electron affinity of Cl = -349 kJ/mol

Bond energy of Cl2 = 239 kJ/mol

Enthalpy of sublimation for K = 90. kJ/mol

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