How Efficient is a Laboratory Burner in Heating Water?

• Michael P. Jansen ^[1]
  1. [1] Cresent School, Canada
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 74, Nº 2 (February), 1997, págs. 213-215
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • When a laboratory (or Bunsen) burner is used to heat water, all of the energy liberated by the burning fuel is not absorbed by the water. This article describes a procedure for determining the percentage efficiency of this common apparatus. This experiment is suitable for secondary school students who are familiar with stoichiometry , simple calorimetry, heats of reaction, collection of gas by downward displacement of water. Extensive pre- and post- laboratory questions (and answers) are included.