TY  - JOUR
A1  - Becker, Friedrich
A1  - Kiefer, Michael
T1  - Mischungswärmen und Verbindungsbildung in binären flüssigen Systemen. III. Äther - Chloroform-Systeme
T2  - Zeitschrift für Naturforschung, A
N2  - The enthalpies of mixing at 25° of diethyl ether, di-n-propyl ether, di-n-butyl ether, di-isopropyl ether, propylene oxide, tetrahydrofuran, and tetrahydropyran with chloroform are determined by an isothermal titration method. As a result, the functions HM-f(N CHCl3) are obtained with a step width of 0.025 of the mole fraction and a relative accuracy of 1 per cent or better. Evaluation of the heat of mixing data by means of equilibrium models ("ideal associated mixture") shows that the systems of aliphatic ethers with chloroform behave rather precisely as one-step equilibria of the type A + B = AB (A = ether; B = chloroform). In the systems of cyclic ethers with chloroform, a se­cond equilibrium step, AB + B = AB2 , must be considered, the importance of which decreases with increasing ring size of the ether. The equilibrium data calculated for the seven ether-diloroform systems are discussed.
Y1  - 2014
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/74043
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-740433
SN  - 1865-7109
VL  - 26
IS  - 6
SP  - 1040
EP  - 1046
PB  - Verlag der Zeitschrift für Naturforschung
CY  - Tübingen
ER  -