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(1) (a) A sample of Zinc (M = 65.38 g/mol) is made gaseous by heating to very high temperatures. Assuming that it is an ideal gas, what would be the entropy per mole of gaseous Zinc at 800 K and at a pressure of 1.00 GPa? (b) In the Sackur-Tetrode equation, there is a term that appears like In (T). At low temperatures, you can therefore have negative entropy values if you use it. Can the entropy ever be negative? If not, what is the assumption that is incorrect about this equation at low temperatures?

(1) (a) A sample of Zinc (M = 65.38 g/mol) is made gaseous by heating to very high temperatures. Assuming that it is an ideal gas, what would be the entropy per mole of gaseous Zinc at 800 K and at a pressure of 1.00 GPa? (b) In the Sackur-Tetrode equation, there is a term that appears like In (T). At low temperatures, you can therefore have negative entropy values if you use it. Can the entropy ever be negative? If not, what is the assumption that is incorrect about this equation at low temperatures?

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
Problem 1.1P
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(1) (a) A sample of Zinc (M = 65.38 g/mol) is made gaseous by heating to very high temperatures. Assuming that it is an ideal gas, what would be the entropy per mole of gaseous Zinc at 800 K and at a pressure of 1.00 GPa? (b) In the Sackur-Tetrode equation, there is a term that appears like In(T). At low temperatures, you can therefore have negative entropy values if you use it. Can the entropy ever be negative? If not, what is the assumption that is incorrect about this equation at low temperatures?
Transcribed Image Text:(1) (a) A sample of Zinc (M = 65.38 g/mol) is made gaseous by heating to very high temperatures. Assuming that it is an ideal gas, what would be the entropy per mole of gaseous Zinc at 800 K and at a pressure of 1.00 GPa? (b) In the Sackur-Tetrode equation, there is a term that appears like In(T). At low temperatures, you can therefore have negative entropy values if you use it. Can the entropy ever be negative? If not, what is the assumption that is incorrect about this equation at low temperatures?
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