Accession Number : ADA321426

Title :   Ionic Equilibria and Reaction Kinetics of Plutonium in Hydrochloric Acid Solutions,

Corporate Author : TECHNICAL INFORMATION SERVICE (AEC) OAK RIDGE TN

Personal Author(s) : Kasha, M. ; Sheline, G. E.

PDF Url : ADA321426

Report Date : AUG 1946

Pagination or Media Count : 40

Abstract : The reaction 3Pu(IV) = 2Pu(III) + Pu(VI) has been studied in solutions of hydrochloric acid varying from 0.183M to 1.545M. In the case of the forward reaction (disproportionation), the studies have been carried out at temperatures from 25 deg C to 70 deg C, whereas the back reaction (reproportionation), has been investigated at 25 deg C only. Measurements of both rates of reaction and equilibrium concentrations have been made. At 25 deg C the disproportionation constant K = Pu(III)(2) Pu(VI)/Pu(IV)(3) ranged from approx. 1 x 10(exp -4) in 1.545M hydrochloric acid to 6.9 in 0.183M hydrochloric acid. Raising the temperature to 70 deg C increased this constant by a factor of 300 to 4000 depending upon the acidity. Without making corrections for ionic strength and chloride complexing effects, K was found to vary inversely as about the fifth power of the hydrochloric acid concentration. p3

Descriptors :   *REACTION KINETICS, *IONIZATION, *CHEMICAL EQUILIBRIUM, *HYDROCHLORIC ACID, *PLUTONIUM, COMPLEX COMPOUNDS, SOLUTIONS(MIXTURES), CHLORIDES, CONCENTRATION(CHEMISTRY), DISPROPORTIONATION.

Subject Categories : Organic Chemistry
      Inorganic Chemistry
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE