Small-Scale Kinetic Study of the Catalyzed Decomposition of Hydrogen Peroxide

• Ronald O. Ragsdale ^[1] ; Jan C. Vanderhooft ^[1] ; Arden P. Zipp ^[1]
  1. [1] University of Utah

     University of Utah

     Estados Unidos

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 75, Nº 2 (February), 1998, págs. 215-216
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The rate of decomposition of hydrogen peroxide with pyrolusite as a catalyst was studied directly by following the formation of oxygen bubbles. The apparatus consisted of a barrel from a 2-ml Beral pipet inserted over a micropipet tip which was fitted into a one-hole stopper. The stopper assembly was placed in a 20-mL glass bottle reaction vessel. The hydrogen peroxide can be obtained from the super market and the catalyst, a piece of pyrolusite, can be recycled. The reaction order was found to be 1.1 + 0.2 by 240 pairs of students. The activation energy was 35 + 14 kJ. Reproducible data have also been obtained with the minerals, psilomelane, maganite, and groutite as catalysts.