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The Principles of Thermodynamics
book

The Principles of Thermodynamics

by N.D. Hari Dass
October 2013
Intermediate to advanced content levelIntermediate to advanced
352 pages
13h 56m
English
CRC Press
Content preview from The Principles of Thermodynamics
244 The Principles of Thermodynamics
n are the same, and equal to -P. Let us concentrate only at the end points l and n.
Therefore, there are three possibilities: i) the points l and n have a common tangent,
ii) the one at n lies above that at l, or iii) the tangent at n lies below that at l. Let us
consider possibility ii) rst. Let ( f
,v
n
) be a point on the tangent at l. In other words,
the tangent at l intersects the vertical line v = v
n
at f
. Clearly, f
n
> f
. Since the
slope of the tangent at l is -P it follows that
f
f
l
v
n
v
l
= P →−P(v
n
v
l
)= f
f
l
< f
n
f
l
g
l
< g
n
(12.44)
This means that ii) represents the case when the liquid phase is more
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Publisher Resources

ISBN: 9781466512085