Conductometric studies on sodium perchlorate and sodium benzoate solutions in binary mixtures of acetonitrile with water at 298 K

Ionic association and conductances of sodium perchlorate in N,N-dimethylformamide + water and tetrahydrofuran + water at 298 K

“…This maximum does not conform to the For tetrahydrofuran + water mixtures, it is found that the Ao values decreased with an increase in the concentration of tetrahydrofuran in water to about 15 mol % tetrahydrofuran and then increase. Similar results were found by Stein for LiClO* (7) and Triener et al (10) for KCIO* in these solvent mixtures and for NaCKH in acetonitrile + water mixtures (5). Due to the difference of solvent composition with that studied by Osinska et al (11), it is not possible to compare the A0 values.…”

“…were deduced from the iset of equations which minimize standard deviation, ( ), <r(A) = {^[A; (caled) -A;(obsd)]2/(n -2)}1/2 (5) j by a least-squares analysis, where / is the relaxation field effect, and AA^i s the electrophoretic countercurrent. k~l is the radius of the ion atmosphere, e is the dielectric constant of the solvent, e is the electron charge, K is the Boltzmann constant, R is the Gurney-sphere diameter, mostly recognized as an ion-pair distance, a is the fraction of solute present as an unpaired ion, c is the molarity of the solution, 0 is the activity coefficient, and ß is twice the Bjerrum distance (17).…”

Conductometric study on sodium perchlorate and sodium benzoate in binary mixtures of 1-propanol + water at 298.15 K

“…The decrease in Aq values may be attributed to increasing viscosities of 1-propanol + water mixtures (Table 1) and different solvation of the ions. Similar results were not found in previous studies (4,5). The difference may be attributed to different solvent systems.…”

“…In two previous papers (4,5), the association behavior of these salts was reported in aqueous mixtures of acetonitrile, N^V-dimethylformamide, and tetrahydrofuran. The present paper reports molar electrolytic conductivities of these salts in mixtures of water with up to 41 mol % 1-propanol.…”

Sodium Salts of Benzoic, m-Salicylic, and p-Salicylic Acid: A Conductivity Study of Diluted Aqueous Solutions

“…Whereas the transport properties at different temperatures of benzoic acid have already been investigated, , the data on electric conductivity for its sodium salt only at 298.15 K are reported. , For this reason it was included in the present study.…”