A New Low-Cost Apparatus for Electrolysis of Water
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Chieko Suzuki [1]
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[1] Shiga University
Shiga University
Japón
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- Localización: Journal of chemical education, ISSN 0021-9584, Vol. 72, Nº 10 (October), 1995, págs. 912-913
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Electrolysis of water is one of the very important subjects in chemistry classes. The limitations of the Hofmann apparatus includes its expense, its fragile nature, the difficulty of simultaneous use by numerous students, and the difficulty of determining the identity of the generated gases. These limitations have led to the development of alternative low-cost handmade apparatus for the electrolysis of water. The materials for making it are merely four pieces of 18-8 stainless steel wires(1.6- X 160-mm), one wooden stick (90-mm long), and some standing items in laboratories. The method of construction and the method of use are simpler and easier than those previously referenced. This apparatus is durable and rugged enough to endure rough treatment, is easily washable, and can be kept in a small space. Moreover, it needs a smaller quantity of electrolyte solution and just three dry cell batteries instead of DC power supply. The use of this apparatus with a 5% sodium hydroxide solution produced the favorable result by turning electricity on for 2 or 3 minutes.
