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Clapeyron equation:
dP/dT = ∆trsS / ∆trsV
Density of water is 0.997 g/cm³ at 298 K
Gibbs Phase Rule:
F = C - P + 2
Phase boundary: pressure and temperature line where two phases can coexist.
Criterion of phase equilibrium!!!
- at equilibrium the chemical potential is the same throughout the sample.
Phase transition: Spontaneous conversion of one phase to another.
Phases: state of matter that is uniform throughout in chemical composition and physical state.
Physical Chemistry!!! (Clapeyron Equation)
Ex. The standard volume and entropy of transition of water from liquid to V***r are +30dm³ mol-1 and +109KJ-1mol-1 respectively, at 100°C. By how much does the boiling temperature change when the pressure is reduced from 1.0 bar to 0.80 bar?