Accession Number : AD0646586

Title :   THE ENTHALPIES OF FORMATION OF RB(+) AND CS(+) IONS IN INFINITELY DILUTE AQUEOUS SOLUTIONS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Vorobev,A. F. ; Ibragim,N. A. ; Skuratov,S. M.

Report Date : 31 OCT 1966

Pagination or Media Count : 13

Abstract : The work is a part of a systematic investigations of the thermochemistry of ionic compounds being performed at the thermochemical laboratory of the Moscow State University. The enthalpies of formation of rubidium and cesium compounds are best determined via the enthalpies of formation of the Rb(+) and Cs(+) ions. Enthalpies of reactions of metallic rubidium and cesium with water and enthalpies of dilution of rubidium and cesium hydroxides were determined experimentally. A vacuum apparatus was used to prepare high purity metal samples and to pour them into the ampoules employed in the calorimetric measurements. An air-tight low-heat-value calorimeter was employed. The data obtained permitted the calculation of the enthalpy of formation of RbOH and CsOH in infinitely dilute solutions, and thus permitted the determination of the standard enthalpies of formation of the Rb(+) and Cs(+) ions. (Author)

Descriptors :   (*RUBIDIUM, HEAT OF FORMATION), (*CESIUM, HEAT OF FORMATION), (*THERMOCHEMISTRY, IONIZATION), DISSOCIATION, ENTHALPY, RUBIDIUM COMPOUNDS, CESIUM COMPOUNDS, HYDROXIDES, CONCENTRATION(CHEMISTRY), CALORIMETRY, USSR

Subject Categories : Inorganic Chemistry
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE