Temperature Coefficient of Electrode Electric Tension and Activity Coefficients of Individual Ionic Species.
Final technical rept. 1 Mar 71-28 Feb 72,
ROME UNIV (ITALY) ISTITUTO DI CHIMICA
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The electrodes Pt-H2HBr- and AgAgBrBr-K were investigated for the true temperature coefficient of their electric tension. The measurement at 25C and 35C were extended over the concentration range from about 0.1m down to about 0.001. The potentiometric experimental values corrected for the moality and the H2-pressure for the Pt-H2H electrode fit very well linear plots as function of the molality, thus allowing the extrapolation at zero ionic strength to be made. The value of the true temperature coefficient for the AgAgBrBr- electrode was obtained new in this research. The values of the activity coefficients of Cl- and H ions in HCl were computed on the basis of the experimental results given previously and compared with the values calculated theoretically and with the values of the mean activity coefficients of HCl obtained experimentally. Author
- Physical Chemistry