Salt effect on the dissociation constant of acid-base indicators |
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Authors: | Francesco Salvatore Diego Ferri Roberto Palombari |
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Affiliation: | (1) Dipartimento di Chimica, Università di Napoli, via Mezzocannone, 4, 80134 Napoli, Italy |
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Abstract: | The effect of the ionic environment on the dissociation constant of acid-base indicators is accounted for by using the specific interaction theory (SIT) of Broensted, Scatchard, and Guggenheim. It is shown that the SIT may be applied to evaluate the activity coefficients of organic ions, regardless of their size and structure, if suitable modifications are introduced. |
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Keywords: | Acid-base indicators dissociation constant salt effect specific interaction theory |
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