Calculate overall energy changes in kilojoules per mole for the formation of $CaCl$ from the elements. The following data are needed: $E_{ea} for Cl = ? 348.6 kJ / mol E_{i 1} for Ca = + 589.8 kJ / mol E_{12} for Ca = + 1145 kJ / mol$ Heat of sublimation for $Ca = + 178.2 kJ / mol$ Bond dissociation energy for $Cl_{2} = + 243 kJ / mol$ Lattice energy for $CaCl_{2} = + 2258 kJ / mol$ Lattice energy (estimated) for $CaCl = + 717 kJ / mol$ Express your answer in kilojoules per mole as an integer.

Question

Calculate overall energy changes in kilojoules per mole for the formation of

CaCl

from the elements. The following data are needed:

E_{ea} for Cl = ? 348.6 kJ / mol E_{i 1} for Ca = + 589.8 kJ / mol E_{12} for Ca = + 1145 kJ / mol

Heat of sublimation for

Ca = + 178.2 kJ / mol

Bond dissociation energy for

Cl_{2} = + 243 kJ / mol

Lattice energy for

CaCl_{2} = + 2258 kJ / mol

Lattice energy (estimated) for

CaCl = + 717 kJ / mol

Express your answer in kilojoules per mole as an integer.

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