A Dibasic Acid Titration for the Physical Chemistry Laboratory

• J. T. Clay ^[1] ; E. A. Walters ^[1] ; G. D. Brabson ^[2]
  1. [1] University of New Mexico

     University of New Mexico

     Estados Unidos

     
  2. [2] University of Virginia

     University of Virginia

     Estados Unidos

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 72, Nº 7 (July), 1995, págs. 665-667
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • A physical chemistry laboratory experiment is described in which both pK, and pK2 are determined for weak dibasic acids with closely spaced acid dissociation constants. The method is acid-base titration. Data are acquired by a computer interfaced to a pH meter, however emphasis on experimental technique is retained by requiring students to manipulate a buret, read it, and manually enter the volumes into the computer. The computer is then used to ease the burden of tedious and repetitious calculations which yield the two pKa values.