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5. a) Estimate the number of Schottky defects in 1 cubic centimeter of potassium iodide, KI, at 200°C. The density of KI is 3.13 g/cm?. See table 3.3 in the textbook for additional information. b) What is the formula for a solid solution composed of 4.0 mole % of Cal, and 96% KI assuming cation vacancies rather than interstitial anions? (Determine x, y, and z for K¸Ca,L) c) How many cation vacancies are there in 1 cubic centimeter of this solution, assuming the same lattice parameters as KI? Table 3.3 The formation enthalpy of Schottky defects in some alkali halide compounds of formula MX* Compound AHs/kJ mol- AHs/eV** LiF 225.2 2.33 LiCl 204.1 2.12 LiBr 173.4 1.80 Lil 102.4 1.06 NaF 233.1 2.42 NaCl 225.7 2.34 NaBr 203.0 2.10 Nal 140.9 1.46 KF 262.0 2.72 KCI 244.5 2.53 KBr 224.6 2.33 KI 153.0 1.59 *All compounds have the halite (NaCl) structure. *The energy unit eV, electron-volt, is widely used for defect energies.

5. a) Estimate the number of Schottky defects in 1 cubic centimeter of potassium iodide, KI, at 200°C. The density of KI is 3.13 g/cm?. See table 3.3 in the textbook for additional information. b) What is the formula for a solid solution composed of 4.0 mole % of Cal, and 96% KI assuming cation vacancies rather than interstitial anions? (Determine x, y, and z for K¸Ca,L) c) How many cation vacancies are there in 1 cubic centimeter of this solution, assuming the same lattice parameters as KI? Table 3.3 The formation enthalpy of Schottky defects in some alkali halide compounds of formula MX* Compound AHs/kJ mol- AHs/eV** LiF 225.2 2.33 LiCl 204.1 2.12 LiBr 173.4 1.80 Lil 102.4 1.06 NaF 233.1 2.42 NaCl 225.7 2.34 NaBr 203.0 2.10 Nal 140.9 1.46 KF 262.0 2.72 KCI 244.5 2.53 KBr 224.6 2.33 KI 153.0 1.59 *All compounds have the halite (NaCl) structure. *The energy unit eV, electron-volt, is widely used for defect energies.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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5. a) Estimate the number of Schottky defects in 1 cubic centimeter of potassium iodide, KI, at 200°C. The density of KI is 3.13 g/cm?. See table 3.3 in the textbook for additional information. b) What is the formula for a solid solution composed of 4.0 mole % of Cal, and 96% KI assuming cation vacancies rather than interstitial anions? (Determine x, y, and z for K¸Ca,L) c) How many cation vacancies are there in 1 cubic centimeter of this solution, assuming the same lattice parameters as KI?
Transcribed Image Text:5. a) Estimate the number of Schottky defects in 1 cubic centimeter of potassium iodide, KI, at 200°C. The density of KI is 3.13 g/cm?. See table 3.3 in the textbook for additional information. b) What is the formula for a solid solution composed of 4.0 mole % of Cal, and 96% KI assuming cation vacancies rather than interstitial anions? (Determine x, y, and z for K¸Ca,L) c) How many cation vacancies are there in 1 cubic centimeter of this solution, assuming the same lattice parameters as KI?
Table 3.3 The formation enthalpy of Schottky defects in some alkali halide compounds of formula MX* Compound AHs/kJ mol- AHs/eV** LiF 225.2 2.33 LiCl 204.1 2.12 LiBr 173.4 1.80 Lil 102.4 1.06 NaF 233.1 2.42 NaCl 225.7 2.34 NaBr 203.0 2.10 Nal 140.9 1.46 KF 262.0 2.72 KCI 244.5 2.53 KBr 224.6 2.33 KI 153.0 1.59 *All compounds have the halite (NaCl) structure. *The energy unit eV, electron-volt, is widely used for defect energies.
Transcribed Image Text:Table 3.3 The formation enthalpy of Schottky defects in some alkali halide compounds of formula MX* Compound AHs/kJ mol- AHs/eV** LiF 225.2 2.33 LiCl 204.1 2.12 LiBr 173.4 1.80 Lil 102.4 1.06 NaF 233.1 2.42 NaCl 225.7 2.34 NaBr 203.0 2.10 Nal 140.9 1.46 KF 262.0 2.72 KCI 244.5 2.53 KBr 224.6 2.33 KI 153.0 1.59 *All compounds have the halite (NaCl) structure. *The energy unit eV, electron-volt, is widely used for defect energies.
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