Complexity in "simple" electrolyte solutions: Ion pairing in MgSO4(aq)
作者： Richard Buchner , Ting Chen , Glenn Hefter
DOI: 10.1021/JP034870P
关键词: SIMPLE (dark matter experiment) 、 Ion pairing 、 Electrolyte 、 Chemistry 、 Raman spectroscopy 、 Range (particle radiation) 、 Analytical chemistry 、 Spectral line 、 Aqueous solution 、 Solvent
摘要: A detailed investigation of aqueous solutions MgSO4 has been made by dielectric relaxation spectroscopy over a wide range frequencies (0.2 ≤ ν/GHz 89) and concentrations (0.017 c/M 2.24). Detailed analysis the spectra shows conclusively, as long inferred from ultrasonic absorption studies, simultaneous presence double solvent separated (2SIP), solvent-shared (SIP), contact (CIP) ion pairs. The constants derived for stepwise formation each pair type overall association are in excellent agreement with literature estimates based on other kinds measurements. In addition, evidence obtained existence triple ion, Mg2SO42+(aq), or possibly more aggregated species, at high electrolyte (c > 1 M). Support CIPs, SIPs, is provided Raman spectroscopy. implications present findings quantitative models thermodynamic behavior higher-valent electrolytes b...
acs.org
murdoch.edu.au
core.ac.uk参考文章(40)
M. Tomšič, M. Bešter-Rogač, A. Jamnik, R. Neueder, J. Barthel, Conductivity of magnesium sulfate in water from 5 to 35°C and from infinite dilution to saturation Journal of Solution Chemistry. ,vol. 31, pp. 19- 31 ,(2002) , 10.1023/A:1014853001357
Wolfram W. Rudolph, Roger Mason, Study of Aqueous Al2(SO4)3 Solution under Hydrothermal Conditions: Sulfate Ion Pairing, Hydrolysis, and Formation of Hydronium Alunite Journal of Solution Chemistry. ,vol. 30, pp. 527- 548 ,(2001) , 10.1023/A:1010334818580
Richard Buchner, Stephen G. Capewell, Glenn Hefter, Peter M. May, Ion-Pair and Solvent Relaxation Processes in Aqueous Na2SO4Solutions The Journal of Physical Chemistry B. ,vol. 103, pp. 1185- 1192 ,(1999) , 10.1021/JP983706C
Chemistry of marine water and sediments Springer. ,(2002) , 10.1007/978-3-662-04935-8
Steven Kratsis, Glenn Hefter, Peter M. May, Potentiometric Study of the Association of Magnesium and Sulfate Ions at 25°C in High Ionic Strength Media Journal of Solution Chemistry. ,vol. 30, pp. 19- 29 ,(2001) , 10.1023/A:1005201825524
Richard Buchner, Christian Hölzl, Jochen Stauber, Josef Barthel, Dielectric spectroscopy of ion-pairing and hydration in aqueous tetra-n-alkylammonium halide solutions Physical Chemistry Chemical Physics. ,vol. 4, pp. 2169- 2179 ,(2002) , 10.1039/B110361J
Richard Buchner, Josef Barthel, 9 Dielectric relaxation in solutions Annual Reports Section 'C' (Physical Chemistry). ,vol. 97, pp. 349- 382 ,(2001) , 10.1039/B101629F
Alex C. Tikanen, W. Ronald Fawcett, The Role of Solvent Permittivity in Estimation of Electrolyte Activity Coefficients for Systems with Ion Pairing on the Basis of the Mean Spherical Approximation Berichte der Bunsengesellschaft für physikalische Chemie. ,vol. 100, pp. 634- 640 ,(1996) , 10.1002/BBPC.19961000515
J. Barthel, H. Hetzenauer, R. Buchner, Dielectric relaxation of aqueous electrolyte solutions. I. Solvent relaxation of 1:2, 2:1, and 2:2 electrolyte solutions Berichte der Bunsengesellschaft für physikalische Chemie. ,vol. 96, pp. 988- 997 ,(1992) , 10.1002/BBPC.19920960807
Yun-Hong Zhang, Chak K. Chan, Understanding the Hygroscopic Properties of Supersaturated Droplets of Metal and Ammonium Sulfate Solutions Using Raman Spectroscopy Journal of Physical Chemistry A. ,vol. 106, pp. 285- 292 ,(2002) , 10.1021/JP012694J