Colorimetric Hydrogel from Natural Indicators: A Tool for Electrochemistry Education

• Anna Fogde ^[1] ; Berit Kurtén ^[1] ; Thomas Sandberg ^[1] ; Tan-Phat Huynh ^[1]
  1. [1] Åbo Akademi University

     Åbo Akademi University

     Turku, Finlandia

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 97, Nº 10, 2020, págs. 3702-3706
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The electrolysis of water is popular both as lab work and as a demonstration. In this activity, the electrolysis of water in the presence of a pH indicator is used to produce text and symbols. This report describes the design of an environmentally friendly setup of a writing board utilizing the electrolysis of water in a hydrogel environment. The activity can be performed by only using chemicals and materials that are easily accessible to everyone, with no special permit needed. The writing board has been developed mainly as an outreach activity for our faculty and has been assessed during visits from upper secondary school students.