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van der Waals equation.

van der Waals equation.

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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The van der Waals constants for N2 are and b = 0.0391L mol. Con- -2 a = 1.390 L²atm mol sider 0.5 moles of N,(g) is in a vessel of volume 10L. Assuming that the temperature is 285 K, compare the pressures predicted by the ideal gas equation and the van der Waals equation. What is the percentage difference in using the ideal gas equation instead of the van der Waals equation?
Transcribed Image Text:The van der Waals constants for N2 are and b = 0.0391L mol. Con- -2 a = 1.390 L²atm mol sider 0.5 moles of N,(g) is in a vessel of volume 10L. Assuming that the temperature is 285 K, compare the pressures predicted by the ideal gas equation and the van der Waals equation. What is the percentage difference in using the ideal gas equation instead of the van der Waals equation?
Expert Solution
Step 1

Ideal gas law equation is to study the characteristics of ideal gas. When there is need to study the behavior of real gas Vander Waals  equation is more suitable. Vander Waals includes the forces between gas molecules and also the volume of gas molecules. These two quantities in equation are represented by a and b constants respectively.

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