Synthesis and Iodometric Analysis of the Polyiodide Salt (NMe4)[I5]

• Charles G. Young ^[1] ; Sioe See Volaric ^[2]
  1. [1] La Trobe University

     La Trobe University

     Australia

     
  2. [2] University of Melbourne

     University of Melbourne

     Australia

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 97, Nº 4, 2020, págs. 1117-1119
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • This paper describes a first-year undergraduate exercise involving the synthesis of an “unknown” polyiodide salt, (NMe4)[I5], and the determination of its formula using the classic iodine–thiosulfate (iodometric) titration. The exercise introduces students to simple synthetic and titrimetric techniques, assists the development of their chemical and glassware handling and titrimetric skills, and acquaints them with unfamiliar polyiodide compounds. It also introduces students to key chemical concepts such as The Law of Definite Proportions, percentage elemental composition, empirical chemical formulas, quantitative stoichiometric reactions, and halogen catenation.