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David R. Lide (ed), CRC Handbook of Chemistry and Physics, 84th Edition.CRC Press. Boca Raton, Florida, 2003; Section 6, Fluid Properties; Vapor Pressure Uncertainties of several degrees should generally be assumed.
This is illustrated in the vapor pressure chart (see right) that shows graphs of the vapor pressures versus temperatures for a variety of liquids. [7] At the normal boiling point of a liquid, the vapor pressure is equal to the standard atmospheric pressure defined as 1 atmosphere, [ 1 ] 760 Torr, 101.325 kPa, or 14.69595 psi.
The boiling point of water is the temperature at which the saturated vapor pressure equals the ambient pressure. Water supercooled below its normal freezing point has a higher vapor pressure than that of ice at the same temperature and is, thus, unstable. Calculations of the (saturation) vapor pressure of water are commonly used in meteorology.
The relationship between the torr and the millimeter of mercury is: 1 Torr = 0.999 999 857 533 699... mmHg; 1 mmHg = 1.000 000 142 466 321... Torr; The difference between one millimeter of mercury and one torr, as well as between one atmosphere (101.325 kPa) and 760 mmHg (101.3250144354 kPa), is less than one part in seven million (or less than ...
Data obtained from Lange's Handbook of Chemistry, 10th ed. and CRC Handbook of Chemistry and Physics 44th ed. The annotation, d a°C/b°C, indicates density of solution at temperature a divided by density of pure water at temperature b known as specific gravity. When temperature b is 4 °C, density of water is 0.999972 g/mL.
of formation Δ f H o solid? kJ/mol Standard molar entropy S o solid? J/(mol K) Heat capacity c p? J/(mol K) Liquid properties Std enthalpy change of formation Δ f H o liquid: −483.5 kJ/mol Standard molar entropy S o liquid: 158.0 J/(mol K) Enthalpy of combustion, Δ c H o –876.1 kJ/mol Heat capacity c p: 123.1 J/(mol K) Gas properties Std ...
of formation, Δ f H o solid? kJ/mol Standard molar entropy, S o solid? J/(mol K) Heat capacity, c p: 0.212 J/(mol K) at −200°C Liquid properties Std enthalpy change of formation, Δ f H o liquid: −318.2 kJ/mol Standard molar entropy, S o liquid: 180 J/(mol K) Heat capacity, c p: 2.68 J/(gK) at 20°C-25°C Gas properties Std enthalpy ...
of formation, Δ f H o liquid –134.3 kJ/mol Standard molar entropy, S o liquid? J/(mol K) Enthalpy of combustion –473.2 kJ/mol Δ c H o: Heat capacity, c p: 114.25 J/(mol K) Gas properties Std enthalpy change of formation, Δ f H o gas –103.18 kJ/mol Standard molar entropy, S o gas: 295.6 J/(mol K) at 25 °C Heat capacity, c p: 65.33 J ...