THERMODYNAMIC PROPERTIES OF ALKALI-METAL HYDROXIDES .2. POTASSIUM, RUBIDIUM, AND CESIUM HYDROXIDES

The data on thermodynamic and molecular properties of the potassium, r ubidium and cesium hydroxides have been collected, critically reviewed , analyzed, and evaluated. Tables of the thermodynamic properties [C-p degrees, Phi degrees=-(G degrees-H degrees(0)/T, S degrees, H degrees -H degrees(0), Delta(f)H degrees, Delta(f)G degrees)] of these hydroxi des in the condensed and gaseous states have been calculated using the results of the analysis and some estimated values. The recommendation s are compared with earlier evaluations given in the JANAF Thermochemi cal Tables and Thermodynamic Properties of Individual Substances. The properties considered are: the temperature and enthalpy of phase trans itions and fusion, heat capacities, spectroscopic data, structures, bo nd energies, and enthalpies of formation at 298.15 K. The thermodynami c functions in solid, liquid, and gaseous states are calculated from T =0 to 2000 K for substances in condensed phase and up to 6000 K for ga ses. (C) 1997 American Institute of Physics and American Chemical Soci ety.