Question

Use the following data, to calculate the lattice energy of CaCl2. Show the Born-Haber cycle diagram and calculations. Ca2+(g) + 2Cl-(g)  CaCl2 (s) LE? Ca(s) + Cl2 (g)  CaCl2 (s) ΔHθf = -796 kJ/mol Ca(s) + Cl2 (g)  Ca(g) + Cl2 (s) ΔHθat =+178 kJ/mol Ca(g) + Cl2 (s)  Ca+(g) + Cl2 (s) + e- ΔHθIE =+590 kJ/mol Ca+(g) + Cl2 (g) + e-  Ca2+(g) + Cl2 (g) + 2e- ΔHθIE2=+1150kJ/mol Ca2+(g) + Cl2 (g) + 2e-  Ca2+(g) + 2Cl (g) + 2e- ΔHθat =+244 kJ/mol Ca2+(g) + 2Cl (g) + 2e-  Ca2+(g) + 2Cl-(g) ΔHθEA= -349 kJ/mol

Answer 1

Answer:

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