Accession Number : AD0713643

Title :   ZUM PROBLEM DER UEBERGANGSENTROPIE BEI DER DISSOZIATION (The Problem of Entropy Gain with Dissociation),

Corporate Author : DEUTSCHE FORSCHUNGS- UND VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V STUTTGART-VAIHINGEN (WEST GERMANY)

Personal Author(s) : Krauss,L.

Report Date : 30 JAN 1970

Pagination or Media Count : 8

Abstract : An investigation was made to determine if Trouton-Pictet's rule, valid for phase transitions, can be extended to dissociation processes for diatomic molecules. Comparing the entropy increase from the non-dissociated to dissociated states, a common law exists for all diatomic molecules examined. If the procedure is performed at a certain 'fix-point', the maximum of the specific heats, an average value of approximately 30 cal/Mol K for entropy gain results. Since the Trouton-Pictet rule is a consequence of the theorem of corresponding states and has been found only for phase transitions, the above results lead to the assumption that the new law can be seen as an extention of the Trouton-Pictet rule applicable to all types of 'state transitions'. (Author)

Descriptors :   (*DIATOMIC MOLECULES, *DISSOCIATION), SPECIFIC HEAT, ENTROPY, WEST GERMANY

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE