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(a) Derive the equation of state, the entropy, and the internal energy of the gas.

(a) Derive the equation of state, the entropy, and the internal energy of the gas.

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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hello, any help would be appreciated

Please show all working. Universal gas constant, R = 8.3145 J mol¬1 K-1 1. The Helmholtz function of a certain gas is given by 3 (V – nb)T an? F(T,V) = -nRT|1+ ln пф V where n is the number of moles of gas, T is the temperatures of the gas, V is the volume of the gas, and a, b, and o are constants. (a) Derive the equation of state, the entropy, and the internal energy of the gas. (b) Suppose that 100 moles of the gas expands from 2 m³ to 5 m³ at 280 K and that the constants have the values a = 0.364 J m³ mol-2, b = 4.27 x 10-5 m³ mol-1, and $ = 1.09 x 10-5 m³ K³/2 mol-1. Calculate: ( i) ΔU. (ii) the maximum energy that can be made available for work due to the process. (iii) the speed of sound in the gas after the expansion if the ratio of specific heat capacities for the gas is y = 1.28 and the density of the gas is 0.881 kg m-3 in the final state. (c) Using the free energy of a monatomic ideal gas, derive the ideal gas law.
Transcribed Image Text:Please show all working. Universal gas constant, R = 8.3145 J mol¬1 K-1 1. The Helmholtz function of a certain gas is given by 3 (V – nb)T an? F(T,V) = -nRT|1+ ln пф V where n is the number of moles of gas, T is the temperatures of the gas, V is the volume of the gas, and a, b, and o are constants. (a) Derive the equation of state, the entropy, and the internal energy of the gas. (b) Suppose that 100 moles of the gas expands from 2 m³ to 5 m³ at 280 K and that the constants have the values a = 0.364 J m³ mol-2, b = 4.27 x 10-5 m³ mol-1, and $ = 1.09 x 10-5 m³ K³/2 mol-1. Calculate: ( i) ΔU. (ii) the maximum energy that can be made available for work due to the process. (iii) the speed of sound in the gas after the expansion if the ratio of specific heat capacities for the gas is y = 1.28 and the density of the gas is 0.881 kg m-3 in the final state. (c) Using the free energy of a monatomic ideal gas, derive the ideal gas law.
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