Re: Acid Rain

From: Karen Kalumuck (karenk@exploratorium.edu)
Date: Tue Mar 02 2004 - 13:09:55 PST

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Message-Id: <v01540b00bc6aa7cec947@[192.168.111.72]>
Date: Tue, 2 Mar 2004 13:09:55 -0800
From: karenk@exploratorium.edu (Karen Kalumuck)
Subject: Re:  Acid Rain

Hi Everyone --

In preparing "acid rain" from vinegar, a ratio that typically results in
"rain" at the upper pH limit of acid rain (around pH 5) is: 20 drops of
vinegar into 1/4 cup (about 60 ml) water. If you have pH paper, it's
always good to check; tap water varies in pH, and distilled water that you
can purchase is acidic, not neutral, due to diffusion of carbon dioxide
into the water during preparation.

Hope that his helps!

---Karen

Karen E. Kalumuck, Ph.D.
Biologist/Educator
Exploratorium Teacher Institute
3601 Lyon St.
San Francisco, CA 94123
415-561-0388
FAX 415-561-0307

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