caa a22 4500 378886525 CHVBK 20180305123444.0 cr unu---uuuuu 161128e20040701xx s 000 0 eng 10.1524/zpch.218.7.887.35727 doi (NATIONALLICENCE)gruyter-10.1524/zpch.218.7.887.35727 Makrlík E. Extraction of Sodium Picrate from Water into Nitrobenzene in the Presence of Dibenzo-21-Crown-7 [Elektronische Daten] [E. Makrlík] From extraction experiments with 22Na as a tracer, the extraction constant corresponding to the equilibrium Na+(aq) + A−(aq) + L(nb) ⇔ NaL+(nb) + A−(nb) taking place in the two-phase water-nitrobenzene system (A− = picrate, L = dibenzo-21-crown-7; aq = aqueous phase, nb = nitrobenzene phase) was evaluated as logKex(NaL+,A−) = 1.9±0.1. Further, the stability constant of the dibenzo-21-crown-7-sodium complex in nitrobenzene saturated with water was calculated for a temperature of 25°C log βnb(NaL+) = 7.1±0.1. © 2004 Oldenbourg Wissenschaftsverlag GmbH Thermodynamics & statistical physics nationallicence Laboratory techniques, experiments nationallicence Physical chemistry nationallicence Zeitschrift für Physikalische Chemie/International journal of research in physical chemistry and chemical physics Oldenbourg Wissenschaftsverlag GmbH 218/7/2004(2004-07-01), 887-891 0942-9352 218:7/2004<887 2004 218 zpch https://doi.org/10.1524/zpch.218.7.887.35727 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/zpch.218.7.887.35727 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Makrlík E. NATIONALLICENCE 773 0- Zeitschrift für Physikalische Chemie/International journal of research in physical chemistry and chemical physics Oldenbourg Wissenschaftsverlag GmbH 218/7/2004(2004-07-01), 887-891 0942-9352 218:7/2004<887 2004 218 zpch CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter