Lattice Energy Problems

Lattice Energy Problems - Extra Lattice Energy Problems...

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Extra Lattice Energy Problems Fall 2011 1. The lattice energy of an ionic compound is the energy released when ions in the gas phase form a crystalline solid. Given the data below, find lattice energy for KBr, which is the Δ H o for the following reaction: K + (g) + Br - (g) KBr (s) Δ H o = ? Chemical reaction Δ H o in kJ/mol Type of reaction K (s) K (g) 89.24 Heat of Sublimation K (g) K + (g) + e- 419 Ionization energy Br 2 (g) 2 Br (g) 193 Bond energy Br (g) + e- Br - (g) -325 Electron Affinity K (s) + 1/2 Br 2 (g) KBr (s) -394 Heat of Formation 2. The lattice energy of an ionic compound is the energy released when ions in the gas phase form a crystalline solid. Given the data below, find lattice energy for AlBr 3 , which is the Δ H o for the following reaction: Al 3+ (g) + 3 Br - (g) AlBr 3 (s) Δ H o = ? Chemical reaction Δ H o in kJ/mol Type of reaction Al (s) Al (g) 329.10 Heat of sublimation Al (g) Al + (g) + e-
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Lattice Energy Problems - Extra Lattice Energy Problems...

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