Stoichiometric experiments with alkane combustion: a classroom demonstration

• Autores: Denis M. Zhilin
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 89, Nº 5, 2012, págs. 649-651
• Idioma: inglés
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• Resumen

  • A simple, effective demonstration of the concept of limiting and excess reagent is presented. Mixtures of either air/methane (from a gas line) or air/butane (from a disposable cigarette lighter) contained in a plastic 2 L soda bottles are ignited. The mixtures combust readily when air/fuel ratios are stoichiometric, but not at a 2-fold excess of any of the reactants. Safety issues and typical errors are also discussed.