If the pH of a 1.00 in. rainfall over 1700 miles^2 is 3.40, how many kilograms of sulfuric acid, H2SO4, are present, assuming that it is the only acid contributing to the pH? For sulfuric acid, Ka1 is very large and Ka2 is 0.012.

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
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If the pH of a 1.00 in. rainfall over 1700 miles^2 is 3.40, how many kilograms of sulfuric acid, H2SO4, are present, assuming that it is the only acid contributing to the pH? For sulfuric acid, Ka1 is very large and Ka2 is 0.012.

The presence of SO2 in the atmosphere and the
sulfuric acid that it produces result in the phenomenon
of acid rain. Uncontaminated rainwater is naturally
acidic and generally has a pH value of about 5.6. The
pH of acid rain is about 4. This acidity has affected
many lakes in northern Europe, the northern United
States, and Canada, reducing fish populations and
affecting other parts of the ecological network within
the lakes and surrounding forests.
The pH of most natural waters containing living
organisms is between 6.5 and 8.5, but freshwater pH
values are far below 6.5 in many parts of the
continental United States. At pH levels below 4.0, all
vertebrates, most invertebrates, and many
microorganisms are destroyed. More than 300 lakes in
New York State contain no fish, and 140 lakes in
Ontario, Canada, are devoid of life. The acid rain that
appears to have killed the organisms in these lakes
originates hundreds of kilometers upwind in the Ohio
Valley and Great Lakes regions. Some of these
regions are recovering as sulfur emissions from fossil
fuel combustion decrease, in part because of the U.S.
Clean Air Act of 1990, which required that power plants
reduce their sulfur emissions by 80%.
Transcribed Image Text:The presence of SO2 in the atmosphere and the sulfuric acid that it produces result in the phenomenon of acid rain. Uncontaminated rainwater is naturally acidic and generally has a pH value of about 5.6. The pH of acid rain is about 4. This acidity has affected many lakes in northern Europe, the northern United States, and Canada, reducing fish populations and affecting other parts of the ecological network within the lakes and surrounding forests. The pH of most natural waters containing living organisms is between 6.5 and 8.5, but freshwater pH values are far below 6.5 in many parts of the continental United States. At pH levels below 4.0, all vertebrates, most invertebrates, and many microorganisms are destroyed. More than 300 lakes in New York State contain no fish, and 140 lakes in Ontario, Canada, are devoid of life. The acid rain that appears to have killed the organisms in these lakes originates hundreds of kilometers upwind in the Ohio Valley and Great Lakes regions. Some of these regions are recovering as sulfur emissions from fossil fuel combustion decrease, in part because of the U.S. Clean Air Act of 1990, which required that power plants reduce their sulfur emissions by 80%.
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