|MadSci Network: Chemistry|
Thank you for your try at my question (http://www.madsci.org/posts/ 947350993.Ch.q.html)! Unfortunately, the explanation is without validity. Zinc chloride is a white solid, quite soluble in water. Recently I attended a workshop for chemistry teachers and no one had an answer although they all were aware that zinc metal will turn black in hydrochloric acid. A few years ago I contacted Flinn Chemical and they couldn't explain it either! Someone out there must know and I'd sure appreciate knowing myself. I hope you can find that someone and bring this query to a close. Thanks again. L. Schroeder
Re: Why does zinc metal turn black when exposed to hydrochloric acid?
Try the links in the MadSci Library for more information on Chemistry.