One of the major factors influencing seasonal ozone loss in the Antarctic winter is the dimerization of ClO in the stratosphere. The equilibrium constant (K) for the reaction 2 ClO(g) → (CIO)2 (g) at different temperatures is shown below. (Data obtained from Nature 332, 796 (1988)). You may use Excel for finding a fitted linear function. T (K) K 233 4.13 ×108 248 5.00 ×107 258 1.45 ×107 268 5.37 ×106 273 3.20 ×106 280 9.62 ×105 288 4.28 ×105 295 1.67 ×105 303 7.02 ×104 a) Determine the standard enthalpy and standard entropy of this reaction. b) Calculate the standard enthalpy of formation and the standard molar entropy of (CIO)2 given that AH°(CIO) = 101.8 kJ/mol and AS (CIO) = 226.6 J/molk

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
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Chapter1: Introduction
Section: Chapter Questions
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One of the major factors influencing seasonal ozone loss in the Antarctic winter is the dimerization
of ClO in the stratosphere. The equilibrium constant (K) for the reaction 2 ClO(g) → (CIO)2 (g) at
different temperatures is shown below. (Data obtained from Nature 332, 796 (1988)). You may
use Excel for finding a fitted linear function.
T (K)
K
233
4.13
×108
248
5.00
×107
258
1.45
×107
268
5.37
×106
273
3.20
×106
280
9.62
×105
288
4.28
×105
295
1.67
×105
303
7.02
×104
a) Determine the standard enthalpy and standard entropy of this reaction.
b) Calculate the standard enthalpy of formation and the standard molar entropy of (CIO)2
given that AH (cio) = 101.8 kJ/mol and AS°(cio) = 226.6 J/molK
Transcribed Image Text:One of the major factors influencing seasonal ozone loss in the Antarctic winter is the dimerization of ClO in the stratosphere. The equilibrium constant (K) for the reaction 2 ClO(g) → (CIO)2 (g) at different temperatures is shown below. (Data obtained from Nature 332, 796 (1988)). You may use Excel for finding a fitted linear function. T (K) K 233 4.13 ×108 248 5.00 ×107 258 1.45 ×107 268 5.37 ×106 273 3.20 ×106 280 9.62 ×105 288 4.28 ×105 295 1.67 ×105 303 7.02 ×104 a) Determine the standard enthalpy and standard entropy of this reaction. b) Calculate the standard enthalpy of formation and the standard molar entropy of (CIO)2 given that AH (cio) = 101.8 kJ/mol and AS°(cio) = 226.6 J/molK
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