A piston cylinder system contains a liquid at 25°C with molar volume given by
V = 20.05 – 6.15 X 10-5 P + 3.7 X 10-8 P
2
- 4 X 10-9 P
3
,
where V is in cm3
/mol and P is in atm for Pressure between 0 and 1000 atm and
(
∂V
∂T)
p
= 0. 007 + 2. 1 × 10−5P (
Cm3
mol . K)
The one mole of liquid is compress at constant temperature of 25°C from 2 atm to 900
atm. Determine the work necessary (J/mol) to carry out this process and the change in its
internal energy.
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