Accession Number : AD0286314

Title :   OAR (RRY) SPECIAL TRANSLATION

Corporate Author : LIBRARY OF CONGRESS WASHINGTON D C AEROSPACE TECHNOLOGY DIV

Personal Author(s) : DOMANSKI,WLADYSLAW

Report Date : DEC 1962

Pagination or Media Count : 1

Abstract : The assumption is made that oxygen is dissolved in solid silver in the form of a chemical compound Ag2O. As a result of thermodynamic considerations, a simple relation between the logarithm of the activity coefficient of Ag2O and temperature was obtained, which is expressed by the formular lg fAg2O - 5.55816 -36.5.10-4 T. Furthermore, the coefficient fAg2O is independent of pressure. On the basis of the accepted assumption, several thermodynamic functions, such as enthalpy, residual entropy, and residual thermodynamic potential, were computed. It wa proved that the curve of solubility in solid silver, which exhibits a minimum at 400 C, results from the natural coordination of thermodynamic functions and does not depend on the additional assu ptions made by other investigators. There is little probability for the formation of silver peroxide (Ag2O2) owing to its more complicated structure and the smaller exothermic effect of the reaction in which this co poun is created. It is demonstrated that oxygen can be dissolved in solid silver in the for of Ag2O when the formation of atomic gas is disregarded and when there is simultaneous retention of the above-mentioned proportionality. Henry's coefficient, as determined from thermodynamic computations wit the acceptance of dissociation of gas molecules into atom , cannot be expressed as a simple functional relation of temperature. (Author a -286 31 1 +++Based on the assumption that oxygen is dissolved in solid Ag in the form Ag2O, the following relationship was derived: Log(to base F) Ag2O equals 5.55816 - 36.5 x 1/10,000 T. Enthalpy, residual entropy, residual thermodynamic potential were computed.

Descriptors :   *OXYGEN, *SILVER, *SOLUBILITY, ABSORPTION, ENTHALPY, ENTROPY, GASES, METALS, THERMODYNAMICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE