Atmosphere, international standard, thermodynamic

TABLE 2-236 Thermodynamic Properties of the International Standard Atmosphere ... 

All the formulae relate to the ideal gas state at the standard pressure of 101 325 Pa (1 atmosphere) and the thermodynamic functions comprise the standard molar internal energy relative to the zero temperature energy U (X) — the function H (T) — JT (0) /r where H denotes... 

IAPWS-95 is now the state of the art and the international standard for representing water s thermodynamic properties at temperatures from its freezing point to 1000°C and at pressures up to 1000 MPa. It also extrapolates in a physically meaningful manner outside this range, including the supercooled liquid water region. The uncertainties in the properties produced by IAPWS-95 are comparable to those of the best available experimental data this is quite accurate in some cases (for example, relative uncertainty of 10 for liquid densities at atmospheric pressure and near-ambient temperatures) and less so where the data are less certain (for example, relative uncertainty of 2 x 10 for most vapor heat... 

Thermodynamic calculations were performed at 0 K, room temperature and 600 K, in all cases assuming atmospheric pressure. Rate constants were calculated using die standard canonical transition state theory with Eckart s correction for tunneling [43] and both with and without hindered rotor treatment of the internal rotation. Rate coefficients are calculated based on conventional transition state theory in the high-pressure Umit. For the bimolecular radical addition, the rate coefficient is calculated according to Eq. 1 ... 

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