Electroconductivity of potassium iodide solutions in the system ethyl alcohol-water

Yurkinskii, V. P.; Firsova, E. G.; Gusevskaya, Elena V.

doi:10.1134/s1070427209090304

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“…Our study was performed in the temperature range 290-323 K. The experimental procedure has been described previously [6,7]. We used propanol of chemically pure grade.…”

Section: Methodsmentioning

confidence: 99%

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Electrical conductivity of lithium chloride solutions in the propanol-water system

2012

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Electrical conduction of lithium chloride solutions in the propanol-water system was studied in the temperature range by using the conductometric method. The electrical conductivity of the solutions was determined in relation to the contents of water and lithium chloride.Recently, solutions of lower aliphatic alcohols have been fi nding increasingly wide application in modern technological practice [1][2][3].It is known that the physicochemical properties of alcohols strongly depend on their content of dissolved water [4,5]. A topical task in this regard is to develop a proximate method for evaluating the content of water in alcoholic solutions. In development of a conductometric technique for determining the content of water in aqueous-alcoholic solutions, it is necessary to know their electrical conductivity. There is published evidence about the electrical conductivity of aqueousorganic electrolytes, but the effect of the water content on this parameter has been insuffi ciently studied [5].Proceeding with previous studies [6, 7], we examined the electrical conductivity of lithium chloride solutions in the propanol-water system in relation to temperature and salt concentration. EXPERIMENTALOur study was performed in the temperature range 290-323 K. The experimental procedure has been described previously [6,7]. We used propanol of chemically pure grade. The concentration of lithium chloride was varied within the range 0.010-2.566 M, and the content of water in the mixtures, from 0 to 50 vol %.Using the experimental data, we determined the electrical conductivity χ (S cm -1 ) of the solutions under study and obtained temperature dependences χ = f(T) and isotherms χ = f(c LiCl ) at varied content of water in the aqueous-alcoholic solution. The experimental data were processed by using standard computer software ORIDGIN. Figure 1 shows a typical example of the χ = f(T) Fig. 1. Electrical conductivity χ vs. temperature T for lithium chloride solutions in the propanol-water system (2 vol %). Lithium chloride concentration c LiCl (M): (1) 0.010, (2) 0.021, (3) 0.041, (4) 0.062, (5) 0.083, and (6) 0.104. χ, S cm -1 T, K

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“…Our study was performed in the temperature range 290-323 K. The experimental procedure has been described previously [6,7]. We used propanol of chemically pure grade.…”

Section: Methodsmentioning

confidence: 99%

“…Proceeding with previous studies [6,7], we examined the electrical conductivity of lithium chloride solutions in the propanol-water system in relation to temperature and salt concentration.…”

mentioning

confidence: 99%