Acid and Limestone Rock

This Progress Report was submitted by Dave Clark, Andy Jameson, Kyle Kennedy, Dan Frank [e-mailto:] on 9/21/98.

WE learned a great deal today from Dr. Green as far as our experiment is concerned. He told us that the basic chemical equation would be the addition of HCL and H20. This is simply adding hydro-chloric acid to water. This chemical reaction should allow us to create various ph levels as well as different molarities. We will be measuring the molarity of each test sample as well as the ph level. Dr. Green suggested that we test calcite as well as limestone rock. Calcite has some of the same properties as limestone, so measuring the two would be beneficial. We will have about eight different samples of acid. Each ph level will have five test samples.
Thus, we will have 40 total acid samples using limestone. Likewise, we will be testing 25 samples of calcite in 5 different ph levels. Our limestone samples will need to be of similar weight and shape so that the samples are almost identical. Also, during the experiment, we will have to moniter the acid and its interaction with the rock. Since limestone is a base, it will attempt to neutralize the acid over time. Thus, we will have to regulate the ph level by adding more acid as the limestone attempts to raise the level.

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