TRANSFERENCE NUMBERS AND CONDUCTANCES IN CONCENTRATED SOLUTIONS: SILVER NITRATE AND SILVER PERCHLORATE AT 25.00 °C

1959 ◽  
Vol 37 (12) ◽  
pp. 1959-1963 ◽  
Author(s):  
A. N. Campbell ◽  
K. P. Singh

The transference numbers, equivalent conductances, densities, and viscosities of aqueous solutions of silver nitrate and of silver perchlorate have been determined from a concentration of 0.1 M up to 7.6 M, for silver nitrate, and up to 5.6 M for silver perchlorate. In both cases the cation transference number increases considerably with increasing concentration. Certain anomalies in the results for silver perchlorate raise the possibility of complex ion formation here. Similar anomalies appear in the behavior of equivalent conductance with respect to concentration.The results of the conductance measurements have been compared with the values calculated from the equations of Wishaw and Stokes and of Falkenhagen and Leist.


1952 ◽  
Vol 30 (2) ◽  
pp. 128-134 ◽  
Author(s):  
A. N. Campbell ◽  
E. M. Kartzmark

Measurements of conductance and fluidity of silver nitrate and of ammonium nitrate solutions, over a range of concentration varying from 0.05  N to 14  N (silver nitrate) and from 0.08  N to 15  N (ammonium nitrate) have been made. In both cases, a maximum is observed in the specific conductances but in neither case does a minimum occur in the plot of equivalent conductance against concentration. While the equivalent conductance in very dilute solutions is proportional to [Formula: see text], in very concentrated solutions it appears to be directly proportional to C. Temperature coefficients of conductance and of fluidity are evaluated and their theoretical importance discussed. Partial molar volumes of water in these solutions are evaluated.



1954 ◽  
Vol 32 (9) ◽  
pp. 864-866 ◽  
Author(s):  
S. Hill ◽  
F. E. W. Wetmore

Conductivity data have been combined with transport fractions to show that silver chloride in dilute solutions in silver nitrate can be regarded as being almost completely in the form of complex cation. The mobility of the complex ion is shown to be about one-half that of silver ion.



1985 ◽  
Vol 50 (10) ◽  
pp. 2217-2220 ◽  
Author(s):  
Zdeněk Kodejš ◽  
Hana Špalková ◽  
Ivo Sláma

Densities and viscosities of silver nitrate-dimethyl sulphoxide solutions have been measured at 5, 25, and 60 °C over the range of salt mole fractions from 0.05 to 0.5. The dependence of viscosity on the salt concentration has been expressed by an empirical equation and compared with analogous dependences obtained for aqueous solutions of silver nitrate and solutions of other salts in dimethyl sulphoxide.



1984 ◽  
Vol 62 (2) ◽  
pp. 303-305 ◽  
Author(s):  
J. S. Banait ◽  
K. S. Sidhu ◽  
J. S. Walia

Transference numbers of tetrabutylammonium bromide have been measured in n-butanol at 25 °C in the concentration range 5.79 − 12.86 × 10−2 mol dm−3. The variation of transference number with concentration is negligible. The limiting transference number of tetrabutylammonium ion has been determined by the Longsworth method. Combining the limiting transference number and limiting equivalent conductance of this salt, limiting ionic conductances of tetrabutylammonium and bromide ions have been found to be 8.05 and 8.02 ohm−1 cm2 mol−1, respectively. From these values limiting ionic conductances of other univalent ions, effective ionic radii and solvation numbers have been computed. The solvation numbers of anions have been found to be more than those of cations which shows the protic nature of this solvent.



1954 ◽  
Vol 32 (12) ◽  
pp. 1051-1060 ◽  
Author(s):  
A. N. Campbell ◽  
E. M. Kartzmark ◽  
M. E. Bednas ◽  
J. T. Herron

The specific and equivalent conductances (which also involve the densities) of aqueous solutions of silver nitrate and of ammonium nitrate, ranging in concentration from 0.1 M to that of the pure molten salt, have been determined at temperatures of 221.7 °C and 180.0 °C, respectively. It has been found that when the equivalent conductance is plotted against logarithm of the concentration, a straight line is obtained in the region of concentrations greater than about 6 M or less. Hence the equivalent conductance can be calculated from the relation[Formula: see text]where D = the slope and Λa = equivalent conductance at the limiting experimental concentration, Ca (in the molten state).



2010 ◽  
Vol 7 (1) ◽  
pp. 593-600
Author(s):  
Baghdad Science Journal

Transference numbers of the aqueous zinc chloride and zinc sulphate solutions have been measured for the concentrations 0.03, 0.05, 0.07, 0.09 and 0.1 mol.dm-3at 298.15K, by using the modified Hittorf method. The dependence of transference number on concentration of each electrolyte was also investigated in an attempt to explain the value of the limiting transference number. The Longsworth method has been used for the extrapolation of zinc transference number in aqueous solutions, using the values of the limiting transference numbers of the appropriate values of the limiting equivalent conductance, it was possible to determine the corresponding values of the limiting ion conductance for the cations and anions of the electrolytes. The density and specific conductivity of all solutions have been measured at 298.15K.



1984 ◽  
Vol 49 (5) ◽  
pp. 1109-1115
Author(s):  
Jindřich Novák ◽  
Zdeněk Kodejš ◽  
Ivo Sláma

The density, viscosity, and electrical conductivity of highly concentrated solutions of ammonium nitrate in dimethyl sulphoxide have been determined over the temperature range 10-60 °C and the concentration range 7-50 mol% of the salt. The variations in the quantities as a function of temperature and concentration have been correlated by empirical equations. A comparison is made between the transport properties for the present system, aqueous solutions of ammonium nitrate, and calcium nitrate solutions in dimethyl sulphoxide.



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