Studies of electrolytic conductance in alcohol-water mixtures. III. Sodium chloride in 1-propanol-water mixtures at 15, 25, and 35.degree.

Goffredi, M.; Shedlovsky, Theodore

doi:10.1021/j100866a032

Cited by 40 publications

(14 citation statements)

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“…9) is −14.67 ± 0.28, considerably less than the value reported by Goffredi and Shedlovsky (1967) [39] of 20.33, (compare 46.31, Ref. [37]; 46.58, Ref.…”

Section: Discussionmentioning

confidence: 63%

“…The variance of Λ 0 was greater than reported for individual experimental determinations (typically ±0.02) [39,43], due to the separation of c and EC during fitting and the pooling of disparate data. It was, also, gratifying that the temperature dependence of Λ 0 was found to be quadratic in nature (Table 2), a fact borne out by independent fitting of published values.…”

Section: Discussionmentioning

confidence: 65%

“…Published experimental values for Λ 0 [20,32,33,39,40,43,45] were extrapolated using a simple quadratic regression (R 2 = 1.000). Values for dielectric constant and viscosity of water at temperatures between 0 and 50°C were calculated using functions given by IAPWS (2008) [51].…”

Section: Resultsmentioning

confidence: 99%

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The Statistical Description of Precision Conductivity Data for Aqueous Sodium Chloride

Wadsworth¹

2012

J Solution Chem

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Published precise data for NaCl in the temperature range 0-50°C were assembled, corrected to current standards and analyzed by weighted least-squares regression. There was a notable paucity of data at 0°C. Data were analyzed as specific conductivity to avoid violation of the statistical independence assumption. The regression model was a polynomial in √ c, with an added transcendental term. Powers of √ c were added to published equations to extend the range of c fitted. Temperature dependency of the coefficients was individually modeled by cubic functions in the Celsius temperature. Criteria for an acceptable model included lack of bias, similarity to published theoretical equations, and extrapolation to infinite dilution consistent with literature values. The predictive equation chosen was of the form: κ = Λ 0 c − Sc 3/2 + Ec 2 ln c + J 1 c 2 + J 2 c 5/2 + J 3 c 3 + J 4 c 7/2 + J 5 c 4 + J 6 c 9/2 and fit the data without bias but with high precision (±0.33 µS·cm −1 ) for the full range of published concentrations (up to 5.4 mol·L −1 ), over the temperature range 0-50°C, something not previously achieved. All coefficients but J 5 and J 6 were temperature dependent; the latter terms were required for an unbiased fit at higher concentrations (> 1 mol·L −1 ). Solution of the equation for infinite dilution matched published values closely. The use of separate empirical temperature dependency for the equation coefficients may provide an independent means of validating theoretical treatments of conductivity data.

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“…9) is −14.67 ± 0.28, considerably less than the value reported by Goffredi and Shedlovsky (1967) [39] of 20.33, (compare 46.31, Ref. [37]; 46.58, Ref.…”

Section: Discussionmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 65%

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The Statistical Description of Precision Conductivity Data for Aqueous Sodium Chloride

Wadsworth¹

2012

J Solution Chem

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“…The £ does not vary appreciably in comparison to e and ì. From the data reported earlier [12] a plot that was drawn between â/ì and mass compositions of n-propanol, a curve similar to the variation of L 12 with mass fraction of n-propanol ( Fig. 1) was obtained.…”

Section: Concentration Dependence Of Phenomenological Coefficientsmentioning

confidence: 62%

“…Following the treatment of Overbeek [ 11 ] it has been described in an earlier paper [2] that LH varies inversely with ì where ì is the viscosity of the medium. The viscosity changes in n-propanol and water mixtures have been reported [12]. The viscosity of pure water is less than that of pure n-propanol.…”

Section: Concentration Dependence Of Phenomenological Coefficientsmentioning

confidence: 98%

Non-Equilibrium Thermodynamics of Electroosmosis of Liquid Mixtures Studies on Aqueous n-Propanol

Jain¹,

Tewari²,

Mishra³

1980

Journal of Non-Equilibrium Thermodynamics

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Electroosmotic transport processes of aqueous n-propanol through a pyrex sintered glass membrane (porosity G 4) are reported. The data are analyzed in the light of non-equilibrium thermodynamics. The concentration dependence of the phenomenological coefficients has been shown to be in conformity with the structural modifications. The efficiencies of electrokinetic energy conversion for both electroosmosis and streaming potential have been evaluated and the results thus obtained have been shown to be consistent with the steady state thermodynamic theories. The tightness of the coupling between the flows of matter and electricity has been examined.

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Leitfähigkeit von Elektrolytlösungen

Barthel

1968

Angewandte Chemie

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In der vorliegenden Arbeit werden Methoden und Ergebnisse der Leitfahigkeitsuntersuchungen rnit besonderer Berucksichtigung nichtwcisseriger Losungsmittel diskutiert, z . 6. Athanol, Dioxan, Dimethylformamid, Acetonitril, Nitromethan und Aceton, zum Teil in Mischungen rnit Wasser, sowie NH3, S02, 52 u.a. Anhand eines Modells, das Ionen als ladungstragende Kugeln und das Losungsmittel als homogenes isotropes Medium darstellt, vermag die Leitfahigkeitstheoriezumindest fur niedrige Elektrolytkonzentrationen --eine geschlossene Darstellung des Problems zu geben. Eine neue statistische Behandlung des Transportproblems bestiitigt wesentliche Ergebnisse dieser Darstellung. Eine abschlieJende ubersicht uber die neueren Veriiffentlichungen sol1 den derreitigen Stand der Untersuchungen umgrenzen. Na++ CI-Die ionenerzeugende Reaktion der potentiellen Elektrolyte mit dem Losungsmittel verlauft unvollstandig.CH$OOH+ HzO + CH3COO-+ H3O+ Beide Prozesse werden durch thermodynamische Gleichgewichtskonstanten KA (Assoziationskonstante) oder KD (Dissoziationskonstante) beschrieben [**I. [**I In der folgenden Liste sind die venvendeten Zeichen in der ungefllhren Reihenfolge ihres Auftretens zusammengestellt. = Assoziationskonstante [I/mol] = Dissoziationskonstante [mol/l] = molare Leitfahigkeit m -1 cm2 mol-I] = ,kquivalentleithhigkeit m -1 cm2 val-11 = Grenzwert der Leitfahigkeit fur c +O = spezifische Leitfllhigkeit [&I cm-l] = spezifische Leithhigkeit des Losungsmittels = elektrochemische Wertigkeit des Elektrolyten [K::A:I]; ne = v+z+ = Y-'z-, (Fortsetzung der FuBnote siehe S. 254.)

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Studies of electrolytic conductance in alcohol-water mixtures. III. Sodium chloride in 1-propanol-water mixtures at 15, 25, and 35.degree.

Cited by 40 publications

References 1 publication

The Statistical Description of Precision Conductivity Data for Aqueous Sodium Chloride

The Statistical Description of Precision Conductivity Data for Aqueous Sodium Chloride

Non-Equilibrium Thermodynamics of Electroosmosis of Liquid Mixtures Studies on Aqueous n-Propanol

Leitfähigkeit von Elektrolytlösungen

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