ISSN:
1572-8927
Keywords:
Ethanol-water solvent mixtures
;
primary medium effect
;
hydrogen-silver chloride cell
;
standard emf
;
standard thermodynamic functions
;
activity coefficients of hydrochloric acid
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract From emf E measurements of the reversible cell $$Pt|H_2 (g,1 atm)|HCl(m)|AgCl|Pt$$ at 0.01〈m〈0.1 mol-kg−1 in 70% (w/w) ethanol-water solvent mixtures over the temperature range from −10 to +40°C, the standard emf E° of the cell with the related thermodynamic functions of the cell reaction and the mean molal activity coefficients of hydrochloric acid have been determined. The present E data at 70% (w/w) ethanol have been combined with earlier data at ≤50% (w/w) ethanol to be analyzed critically by a one-stage multilinear regression method leading to an optimized set of E° values for the range 0–70% (w/w) ethanol which are essential for the assessment of pH standards in these solvent media.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00647309
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