The temperature-dependent molar heat capacity of sulfur dioxide gas is given as: Cp,m = a +bT+ c/T² where a = 4.22 J K-1 mol-1, b = 8.79'10-3 J K-2 mol-1, and c = -8.72'10-5 J K mol-1 (a) Estimate the change in molar enthalpy (that is, determine DH in J/mol) of 150 mg of sulfur dioxide gas when it is heated from 10.5 °C to 40.0 °C. (b) Assume that the sulfur dioxide gas behaves ideally under these conditions and determine Cv,m and molar internal energy, DE in J/mol.
The temperature-dependent molar heat capacity of sulfur dioxide gas is given as: Cp,m = a +bT+ c/T² where a = 4.22 J K-1 mol-1, b = 8.79'10-3 J K-2 mol-1, and c = -8.72'10-5 J K mol-1 (a) Estimate the change in molar enthalpy (that is, determine DH in J/mol) of 150 mg of sulfur dioxide gas when it is heated from 10.5 °C to 40.0 °C. (b) Assume that the sulfur dioxide gas behaves ideally under these conditions and determine Cv,m and molar internal energy, DE in J/mol.
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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Transcribed Image Text:The temperature-dependent molar heat capacity of sulfur dioxide gas is given as:
Cp,m = a + bT+ c/T²
where a = 4.22 J K-1 mol-1, b = 8.79′10-3 J K-2 mol-1, and c = -8.7210-5 J K mol-1
(a)Estimate the change in molar enthalpy (that is, determine DH in J/mol) of 150 mg of sulfur dioxide
gas when it is heated from 10.5 °C to 40.0 °C.
(b) Assume that the sulfur dioxide gas behaves ideally under these conditions and determine Cv,m
and molar internal energy, DE in J/mol.
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