Carbohydrate Dehydration Demonstrations

• David A. Dolson ^[1] ; Rubin Battino ^[1] ; Trevor M. Letcher ^[2] ; K. H. Pegel ^[2] ; N. Revaprasadu ^[2]
  1. [1] Wright State University

     Wright State University

     City of Dayton, Estados Unidos

     
  2. [2] Department of Chemistry and Applied Chemistry, University of Natal, Durban, South Africa
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 72, Nº 10 (October), 1995, págs. 927-929
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The "charring reaction" of a carbohydrate with concentrated H2SO4 is a demonstration of the dehydrating power of H2SO4. In this paper several sugars and supermarket carbohydrates are systematically studied with respect to size of particles, addition of water, and amount of H2SO4 added. The results are tabulated as to the amount of time to blackening and to the attainment of a particular volume of the charred material. Detailed safety precautions are included.