The Destruction of Acid Rain

Overview

Objectives/Goals The objective of my project was to see what sealent could protect marble the best from acid rain. Methods/Materials I coated marble pieces with different sealants. I put 3 marble pieces into each plastic container and poured dilute sulfuric acid (which was to mimic acid rain) into each container. I determined whether the marble was dissolving by measuring the pH with pH paper. If it was dissolving then the pH would increase as marble is a base. My different sealants where: Stone+Tile Sealer Finish, Kiwi Wet Proof,and Gel Gloss. I also had two controls which where marble in water and marble in dilute sulfuric acid with no sealant on the marble. Results The acid did dissolve the marble which I was able to see by the increase in pH. All three of the sealants made the marble dissolve more slowly. Of the three sealants Kiwi Wet Proof, which is a waterproofing product for leather, worked the best. Conclusions/Discussion My conculsion is that you can protect marble from acid rain by using a sealant on the surface.

Competition history

• CSEF 2002 Materials Science (Junior Division Only) · Entry J1111

Resources

• CSEF project summary ↗

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