Standardization of potentiometric cells in propan-2-ol-water

✍ Scribed by Clara Ràfols; Martí Rosés; Elisabeth Bosch

• Book ID: 102984188
• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 733 KB
• Volume: 280
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(93)80244-f

✦ Synopsis

Equations for the standardization of potentiometric systems in binary solvent mixtures of moderate permittivity are proposed. The equations were applied to the standardization of a potentiometric system in propan-Zol-water (70 + 30, w/w). Different standardization methods were tested: titration of a strong and a weak acid (hydrochloric and phthalic acid, respectively) with a basic titrant solved in the studied binary solvent or in pure propan-24, or addition of hydrochloric acid to the pure binary solvent. The dissociation constants of the acids and their salts Were previously determined conductimetrically. The advantages and disavantages of the methods for standardization of potentiometric systems in binary solvents of moderate permittivity were evaluated.