edu httpeicornelledu Acid Rain Experiments Background Acid precipitation is defined to have a pH lower than 56 In New York the average pH of rainfall is 4045 and individual storms as low as 30 are not unusual Freshwater lakes commonly are slightly ba ID: 34443
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Environm ental Inquiry Cornell University , Ithaca, NY 14853 EnvInquiry @cornell.edu http://ei.cornell.edu 3= ) and bicarbonate (HCO 3 – One approach to restoring acidic lakes is to add lime to the lake itself, to the influent streams, or to the watershed land. This can be simulated in the laboratory using baking soda (NaHCO 3 horticultural lime, or a stomach antacid such as Tums, which is made up of CaCO 3 . Suggested Steps Introduction Discussion of acid rain: