The Chemical Educator
ISSN: 1430-4171 (electronic version)
Abstract Volume 12
Issue 6 (2007) pp 384-386
Three Titration Experiments Involving 1,2-Propanediamine and Utilizing Computer Data Collection
Donald C. Bowman* and Elizabeth A. Pfister
Department of Science, Math, and Engineering, Central
Virginia Community College, Lynchburg, VA 24502; email@example.com
Published online: 30 November 2007
Abstract. Three titration experiments involving the polyfunctional base 1,2-propanediamine are described. The experiments can be performed alone or used in combination. Both Bronsted-Lowry acid–base theory and Lewis acid–base theory are involved. The concept of speciation (the unprotonated, monoprotonated, or diprotonated form of 1,2-propanediamine present in solution) depending on ionic strength of solution is discussed. Data collection is by computer interface with a pH probe.
Key Words: Laboratories and Demonstrations; general chemistry; quantitative analysis
(*) Corresponding author. (E-mail: firstname.lastname@example.org)
Supporting Materials:Student handouts for the three experiments are available in a Zip file (326 KB).
Issue date: December