Accession Number : AD0753897

Title :   Thermodynamic Properties of Ir2S3 and IrS2.

Descriptive Note : Report for Jan 69-Nov 70,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Chang,Elfreda T. ; Gokcen,Nev A.

Report Date : 15 SEP 1972

Pagination or Media Count : 19

Abstract : Thermodynamic properties of Ir2S3 have been obtained from the equilibrium pressures of S2(g) measured by the effusion technique in the range of 920 to 1110 K. The standard Gibbs energy change at these temperatures for 2 Ir(s)+1.5 S2(g) = Ir2S3(s) was found. The standard heat of formation of Ir2S3 was extrapolated to 25 C. Similar data have been obtained for Ir2S3 + 0.5 S2(g) = 2 IrS2.

Descriptors :   (*IRIDIUM COMPOUNDS, THERMODYNAMICS), SULFIDES, FREE ENERGY, CHEMICAL EQUILIBRIUM, HEAT OF FORMATION

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE