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Start Over Author "Bretti, C" Journal journal of chemical and engineering data
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1. Solubility and Activity Coefficients of Acidic and Basic Nonelectrolytes in Aqueous Salt Solutions. 1. Solubility and Activity Coefficients of o-Phthalic Acid and <SCP>l</SCP>-Cystine in NaCl(aq), (CH<INF>3</INF>)<INF>4</INF>NCl(aq), and (C<INF>2</INF>H<INF>5</INF>)<INF>4</INF>NI(aq) at Different Ionic Strengths and at t = 25 °C

Author

Bretti, C., Crea, F., Foti, C., and Sammartano, S.

Abstract

The solubility of o-phthalic acid and l-cystine was determined at following concentrations:  NaCl(aq) (0.1 to 4.5) mol·L-1, (CH3)4NCl(aq) (0.1 to 3) mol·L-1, (C2H5)4NI(aq) (0.1 to 1) mol·L-1 and in pure water. The solubility trend is (C2H5)4NI > (CH3)4NCl > NaCl for o-phthalic acid and NaCl > (CH3)4NCl > (C2H5)4NI for l-cystine. Setschenow constants and activity coefficients of neutral species were calculated from these data. The different trends shown by o-phthalic acid and l-cystine are discussed.

Published
2005

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