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THERMODYNAMIC RELATIONS EQUILIBRIUM AND STABILITY
where
g is Gibbs function
JouleThompson Effect
When a gas is throttled then first its temperature increase (heating) as the pressure decrease but after a particular pressure, temperature decrease (cooling) as pressure decrease. At different initial temperature different such pressure exist.
ClausiusClapeyron equation
where dp/dT is the slope of the tangent to the coexistence curve at any point, l is the specific latent heat, T is the temperature and V is the specific volume change and S stands for specific entropy.
where,
Sf = entropy of the final phase
Si = entropy of the initial phase
Vf = volume of the final phase
Vi = volume of the initial phase
Triple Point
Phase diagram for water and any other substance on p–T coordinates.
i.e. (dy/dx)_{sublimation}_{ }> (dy/dx)_{vaporization}
Degree of freedom:
f = c – p + 2
c — no. of components
p — no. of phases
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