Calculate lattice's energy of LiCI, BeCl2 andBCI3 using Born - Lande and Kaputiskiiequations. Compare the error from 2methods.

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Answered: Calculate lattice's energy of LICI,…

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter21: The Solid State: Crystals

Section: Chapter Questions

Problem 21.52E

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Use the Born-Haber cycle to calculate the lattice energy of LiCl. Be sure your answer has the correct number of significant digits. Process Heat of sublimation of Li (s) 1/1/Cl2₂ to Cl Energy to dissociate Electron affinity of Cl Ionization energy of Li Standard enthalpy of formation of LiCl kJ mol x10 X Energy required Ś 155.2 121.4 -348.6 520.2 - 408.6 kJ mol
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Use the Born-Haber cycle to calculate the lattice energy of KC1. Be sure your answer has the correct number of significant digits. Heat of sublimation of K (s) Process Energy to dissociate 1 Electron affinity of Cl Ionization energy of K Standard enthalpy of formation of KC1 kJ mol Cl₂ to Cl x10 X Energy required 5 90. 121.4 - 348.6 418.8 -436.5 kJ mol
(a) Imagine that a Born-Haber cycle is being constructed by a colleague, to determine the lattice energy of a hypothetical magnesium halide salt, where X is the halide ion. The colleague makes the following list: First and second ionisations of Mg; 737 and 1451 Sublimation energy of Mg; 147 Electron affinity of X; 200 Atomisation enthalpy of X₂; 400 Enthalpy of formation of MgX₂; -450 2+ 2e+ Mg(+2X (8) b 2+ 2e + Mg( + X2 (8) a + Mg(g) + X₂ (8) 1451 Mg(g) + X₂ (8) Mg(s) + X2 (8) f 147 2+ Mg(g) +2X(g) MgX2 (s) d Sadly the colleague becomes discouraged and leaves the document incomplete, simply drawing boxes around unknown quantities. Complete the calculation by writing down the boxed quantities a-f on your answer paper. You may assume that the units are kJ mol-¹.

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Calculate lattice's energy of LICI, BeCl2 and BCI3 using Born - Lande and Kaputiskii equations. Compare the error from 2 methods.