Conclusions
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1.
The values of log (CB/CBH +) of 4-, 2-, and 2,6-dichloro-4-nitroanilines in the H2O-HCl-γ-butyrolactam (BL) system were obtained at 25°C, at various BL and HCl concentrations under conditions wherein BL is either nonionized, partially or completely ionized.
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2.
It was shown that if BL is either completely nonionized or completely ionized, the Ho of an aqueous solution and the Ho S of a solution of HCl in a H2O-BL mixture are equal at the same H5O2 + concentrations on a molar ratio scale.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 564–569, March, 1989.
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Kislina, I.S., Sysoeva, S.G. & Vinnik, M.I. Acidity function of HCl solutions in mixtures of H2O with γ-butyrolactam. Russ Chem Bull 38, 497–502 (1989). https://doi.org/10.1007/BF00958039
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DOI: https://doi.org/10.1007/BF00958039