1
.
True/False
(10 points each).
Classify the statements below as either True or False
(No explanation required).
A.
At
P
= 1 atm and
T
= 298K the chemical potential of liquid water is lower than
that of the H
2
O gas.
True
B.
When two different phases coexist, their molar entropies are the same.
False
C.
The entropy of any material as a function of the volume and temperature is
described
by the expression:
l
nl
n
V
S
CT
R
V
=+
False
D.
When the temperature of any material is increased from T
1
to T
2
while
maintaining its pressure constant, the change of its entropy is given by the
expression:
2
1
/
T
P
T
S
C dT T
∆=
∫
True
E.
The molar enthalpy
H
of any material is equal to its formation enthalpy,
f
H
∆
False
F.
The coexistence curve between liquid and solid phases is described by the
ClapeyronClausius equation:
2
liquid
solid
HH
dP
P
dT
RT
−
=
False
G.
The chemical potential of an incompressible liquid changes with pressure
according to the equation:
0
0
(,)
l
n
(/ )
PT
P T
RT
P P
µµ
False
H.
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 Spring '08
 LIM
 Physical chemistry, Thermodynamics, pH, molar enthalpy, 2 g, 1bar, False dT RT

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