Dieterici Equation of State

This Demonstration plots a series of isotherms for a number of real gases using the Dieterici equation of state. The values of

T

c

,

P

c

, and

V

c

(critical temperature, pressure, and volume),

a

,

b

(attractive and repulsive parameters), and

Z

(compressibility factor) are calculated and displayed. The Demonstration uses Dieterici's equation for

n=1

,

P(V-b)=RT

-a/RTV

e

, the critical constants

T

c

=a/4Rb

,

P

c

=a/4

2

b

2

e

,

V

c

=2b

, and the compressibility factor

Z=

V

V-b

-a/VRT

e

. The ideal gas equation is

PV=nRT

.

Permanent Citation

Dennis Boriski

"Dieterici Equation of State"
http://demonstrations.wolfram.com/DietericiEquationOfState/
Wolfram Demonstrations Project
Published: November 6, 2012