Ethanol (data Page) - Thermodynamic Properties

Thermodynamic Properties

Phase behavior
Triple point 150 K (−123 °C), 0.00043 Pa
Critical point 514 K (241 °C), 63 bar
Std enthalpy change
of fusion, ΔfusHo		 +4.9 kJ/mol
Std entropy change
of fusion, ΔfusSo		 +31 J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo		 +38.56 kJ/mol
Std entropy change
of vaporization, ΔvapSo		 109.67 J/(mol·K)
Molal freezing point constant –1.99 °C kg/mol
Molal boiling point constant 1.19 °C kg/mol
Solid properties
Std enthalpy change
of formation, ΔfHosolid		 –277.7 kJ/mol
Standard molar entropy,
Sosolid		 160.7 J/(mol K)
Heat capacity, cp 111.46 J/(mol K)
Liquid properties
Std enthalpy change
of formation, ΔfHoliquid		 −277.38 kJ/mol
Standard molar entropy,
Soliquid		 159.9 J/(mol K)
Enthalpy of combustion, ΔcHo –1370.7 kJ/mol
Heat capacity, cp 112.4 J/(mol K)
Gas properties
Std enthalpy change
of formation, ΔfHogas		 −235.3 kJ/mol
Standard molar entropy,
Sogas		 283 J/(mol K)
Heat capacity, cp 78.28 J/(mol K) at 90°C
87.53 J/(mol K) at 110-220°C
Heat capacity ratio,
γ = cp/cv		 1.13 at 90°C
van der Waals' constants a = 1217.9 L2 kPa/mol2
b = 0.08407 liter per mole

Read more about this topic:  Ethanol (data Page)

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