Ionic Molecules And The Born Haber Cycle Page 3
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4(g) CaCl
2+
-
Ca
(g) + 2Cl
(s)
2
sublimation energy of calcium
+178 kJ/mol
first ionization of calcium
+590 kJ/mol
second ionization of calcium
+1150 kJ/mol
bond dissociation of Cl
(g)
+244 kJ/mol
2
-
electron affinity of Cl
-349 kJ/mol
enthalpy of reaction
-326 kJ
Ca(s) Ca(g)
178 kJ
Ca(g) Ca
+
-
(g) + e
590 kJ
(g) Ca
+
2+
-
Ca
(g) + e
1150 kJ
(g) 2Cl(g)
Cl
244 kJ
2
2Cl(g) 2Cl
-
(g)
2(-349 kJ)
(g) CaCl
2+
-
Ca
(g) + 2Cl
(s)
x
2
(g) CaCl
Ca(s) + Cl
(s)
-326 kJ
2
2
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