Re: Will antacids help soil polluted by acid rain?

This could make a decent science project if you have a way to measure soil pH, 
either a glass electrode pH meter or pH paper. Don't try to use a pH meter with 
a metal probe(s) because such meters are worthless to measure pH.

If you start with sphagnum peat moss from a garden center, you could add 
various amounts of powdered anatacid to the peat moss and measure pH changes. 
Sphagnum peat moss has a pH of about 4. You could then grow plants in plain 
sphagnum peat moss and in peat moss plus antacid with a pH of 6 to 7. You could 
have more than two pH levels if you wanted. Have three or more plants per pH 
treatment to provide replication.

You might also compare different types of anatacids. Some contain sodium and 
some calcium. Sodium can be toxic to plants.

Reference

Hershey, D.R. 1995. Plant Biology Science Projects. New York: Wiley.