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  Home > JCE Print > Journal of Chemical Education > Issues > 2008  > February  >
Chemistry for Everyone
A Simplified Model To Predict the Effect of Increasing Atmospheric CO2 on Carbonate Chemistry in the Ocean
Brian J. Bozlee and Maria Janebo
Department of Chemistry, Hawaii Pacific University, Kaneohe, HI 96744-5297

Ginger Jahn
Department of Chemistry, University of Maryland, College Park, MD 20742

Cover
February 2008
Vol. 85 No. 2
p. 213
Abstract
The chemistry of dissolved inorganic carbon in seawater is reviewed and used to predict the potential effect of rising levels of carbon dioxide in the atmosphere. In agreement with more detailed treatments, we find that calcium carbonate (aragonite) may become unsaturated in cold surface seawater by the year 2100 C.E., resulting in the destruction of calcifying organisms such as coral. Our analysis is intended for the environmental chemistry classroom and illustrates the importance of gas solubility, buffers, acid–base chemistry, and the effect of temperature on equilibrium. Calculations are adapted to spreadsheets and are intended to be accessible to upper-level chemistry students.
Supplement
The effective values of the equilibrium constants (K0, K1, K2 and Kw), given as functions of temperature (T) and salinity (S), are available.
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Citation
Bozlee, Brian J.; Janebo, Maria; Jahn, Ginger. J. Chem. Educ. 2008, 85, 213.
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Keywords
Analytical Chemistry; Applications of Chemistry; Aqueous Solution Chemistry; Atmospheric Chemistry; Computer-Based Learning; Environmental Chemistry; Equilibrium; First-Year Undergraduate / General; Green Chemistry; Second-Year Undergraduate; Upper-Division Undergraduate; Water / Water Chemistry
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History
Created:
Last Updated:
1/4/2008
1/9/2008
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