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Chemical demonstrations with consumer chemicals: The black and white reaction
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Abstract
A color-change reaction is described in which two colorless solutions are combined to afford a black mixture. Two more colorless solutions are combined to afford a white mixture. The black and white mixtures are then combined to afford a clear, colorless solution. The reaction uses chemicals that are readily available on the retail market: vitamin C, tincture of iodine, vinegar, ammonia, bleach, Epsom salt, and laundry starch.
Keywords (Audience):
Elementary / Middle School ScienceKeywords (Domain):
DemonstrationsKeywords (Feature):
Tested DemonstrationsKeywords (Subject):
Consumer ChemistryCiting Articles
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This article has been cited by 1 ACS Journal articles (1 most recent appear below).
Quantitative Assay for Starch by Colorimetry Using a Desktop Scanner
Kurt R. Mathews , James D. Landmark and Douglas F. StickleJournal of Chemical Education2004 81 (5), 702Quantitative Assay for Starch by Colorimetry Using a Desktop Scanner
Kurt R. Mathews , James D. Landmark and Douglas F. StickleJournal of Chemical Education2004 81 (5), 702Solution color change by mixture of iodine with starch is well-known. Here we describe a procedure to produce a standard curve for quantification of starch concentration using colorimetry. The colorimetry is performed by image analysis of a picture of ...
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- Received: August 03, 2009
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