From: Geoff Ruth (gruth@leadershiphigh.org)
Date: Wed Dec 05 2001 - 21:10:15 PST
Message-Id: <a05010423b834adf09bee@[192.168.1.163]> Date: Wed, 5 Dec 2001 21:10:15 -0800 From: Geoff Ruth <gruth@leadershiphigh.org> Subject: paper towels as acid/base indicators?
Today in lab I noticed that paper towels I used to clean up some
spilled weak base (dilute sodium hydroxide) turned pink, while those
that I used to clean up some spilled weak acid (vinegar) turned
green. How cool is that? Does anyone have any idea of what the
chemistry is going on in here?
- Geoff
This archive was generated by hypermail 2.1.3 : Mon Aug 05 2002 - 09:21:39 PDT