The classic demonstration of the corrosion or oxidation of a steel nail in an agar gel may be conducted using inexpensive chemicals that are commonly available to the consumer on the retail market. The ferric ion produced is detected with salicylate to give a garnet-red color at the anodic areas where oxidation of iron occurs.
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Citation
Wright, Stephen W.; Folger, Marsha R.; Quinn, Ryan P. J. Chem. Educ.2005 82 1633.
Keywords
Consumer Chemistry; Demonstrations; Descriptive Chemistry; Distance Learning / Self Instruction; Electrochemistry; Elementary / Middle School Science; General Public; Hands-On Learning / Manipulatives; High School / Introductory Chemistry; Inorganic Chemistry; Iron; Laboratory Instruction; Metals; Oxidation / Reduction; Public Understanding / Outreach
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