The specific Gibbs free energy, 8=-Ts, where is the chemical potential (specific enthalpy). Assume that the specific entropy & is -k In In() for vapour k for liquid k for solid For a given substance the reference pressure P are: vapour =9x10 20 J, liquid=3x 10 20 J and a) Determine the temperature of the melting point. = 5 x 1010 Pa and the chemical potentials solid = 2 × 10 20 J. b) Determine the sublimation point at standard atmospheric pressure. c) Adopting solid solid show that the sublimation curve can be approximated by L P = Po exp| kT where L. is the latent heat.

University Physics Volume 2
18th Edition
ISBN:9781938168161
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Chapter4: The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 87CP: A diatomic ideal gas is brought from an initial equilibrium state at p1=0.50 atm and T1=300K to a...
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The specific Gibbs free energy,
8=-Ts,
where is the chemical potential (specific enthalpy). Assume that the specific entropy & is
-k In
In() for vapour
k
for liquid
k
for solid
For a given substance the reference pressure P
are: vapour =9x10 20 J, liquid=3x 10 20 J and
a) Determine the temperature of the melting point.
= 5 x 1010 Pa and the chemical potentials
solid = 2 × 10 20 J.
b) Determine the sublimation point at standard atmospheric pressure.
c) Adopting solid solid show that the sublimation curve can be approximated by
L
P = Po exp|
kT
where L. is the latent heat.
Transcribed Image Text:The specific Gibbs free energy, 8=-Ts, where is the chemical potential (specific enthalpy). Assume that the specific entropy & is -k In In() for vapour k for liquid k for solid For a given substance the reference pressure P are: vapour =9x10 20 J, liquid=3x 10 20 J and a) Determine the temperature of the melting point. = 5 x 1010 Pa and the chemical potentials solid = 2 × 10 20 J. b) Determine the sublimation point at standard atmospheric pressure. c) Adopting solid solid show that the sublimation curve can be approximated by L P = Po exp| kT where L. is the latent heat.
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