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2. The molar heat capacities for solid, liquid, and gaseous molecular chlorine can be written in the following general form, where the coefficients a, b, c and d are given in the table below. = a + bT + cT2 + dT3 R T Range (in K) 15 - 172.12 b (in K-1) c (in K-2) d (in K-3) Phase a solid -1.545 0.1502 -0.001179 3.441 x 10-6 liquid 172.12-239.0 7.689 0.005582 -1.954 x 10-4 > 239.0 3.812 0.001220 -4.856 x 10-7 - gas Note: Tfus = 172.12 K AfusH = 6.406 kl/mol %3D Tvap = 239.0 K AvapH = 20.40 kJ/mol (a) Use this data to find the entropy content (in J/K) for molecular chlorine at 200 K, if the absolute entropy at 15 K is 1.401 J/K. (b) What is the change in enthalpy, AH (in kJ), if one mole of Cl2 is heated from 200 to 250 K?

2. The molar heat capacities for solid, liquid, and gaseous molecular chlorine can be written in the following general form, where the coefficients a, b, c and d are given in the table below. = a + bT + cT2 + dT3 R T Range (in K) 15 - 172.12 b (in K-1) c (in K-2) d (in K-3) Phase a solid -1.545 0.1502 -0.001179 3.441 x 10-6 liquid 172.12-239.0 7.689 0.005582 -1.954 x 10-4 > 239.0 3.812 0.001220 -4.856 x 10-7 - gas Note: Tfus = 172.12 K AfusH = 6.406 kl/mol %3D Tvap = 239.0 K AvapH = 20.40 kJ/mol (a) Use this data to find the entropy content (in J/K) for molecular chlorine at 200 K, if the absolute entropy at 15 K is 1.401 J/K. (b) What is the change in enthalpy, AH (in kJ), if one mole of Cl2 is heated from 200 to 250 K?

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
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2. The molar heat capacities for solid, liquid, and gaseous molecular chlorine can be written in the following general form, where the coefficients a, b, c and d are given in the table below. Cp° %3D R = a + bT + cT² + dT³ T Range (in K) b (in K-1) c (in K-2) d (in K-3) Phase solid 15 - 172.12 -1.545 0.1502 -0.001179 3.441 x 106 liquid 172.12-239.0 7.689 0.005582 -1.954 × 104 - - > 239.0 3.812 0.001220 -4.856 x 10-7 - gas Note: Tfus = 172.12 K AfusH = 6.406 kJ/mol %3D %3D Tvap = 239.0 K AvapH = 20.40 kI/mol %3D (a) Use this data to find the entropy content (in J/K) for molecular chlorine at 200 K, if the absolute entropy at 15 K is 1.401 J/K. (b) What is the change in enthalpy, AH (in kJ), if one mole of Cl2 is heated from 200 to 250 K? 3. Trouton's rule arises from the observation that ApapS - 88 for many non-associated mol·K liquids. (a) Test this observation by evaluating ApapS for the substances listed in the table below. Do these materials match the general observation that supports Trouton's rule?
Transcribed Image Text:2. The molar heat capacities for solid, liquid, and gaseous molecular chlorine can be written in the following general form, where the coefficients a, b, c and d are given in the table below. Cp° %3D R = a + bT + cT² + dT³ T Range (in K) b (in K-1) c (in K-2) d (in K-3) Phase solid 15 - 172.12 -1.545 0.1502 -0.001179 3.441 x 106 liquid 172.12-239.0 7.689 0.005582 -1.954 × 104 - - > 239.0 3.812 0.001220 -4.856 x 10-7 - gas Note: Tfus = 172.12 K AfusH = 6.406 kJ/mol %3D %3D Tvap = 239.0 K AvapH = 20.40 kI/mol %3D (a) Use this data to find the entropy content (in J/K) for molecular chlorine at 200 K, if the absolute entropy at 15 K is 1.401 J/K. (b) What is the change in enthalpy, AH (in kJ), if one mole of Cl2 is heated from 200 to 250 K? 3. Trouton's rule arises from the observation that ApapS - 88 for many non-associated mol·K liquids. (a) Test this observation by evaluating ApapS for the substances listed in the table below. Do these materials match the general observation that supports Trouton's rule?
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