How acidic is the rain if atmospheric CO2 concentration doubles?
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This page first made public: Jun 6, 2013
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Description and Teaching Materials
Using 1 bar total atmospheric pressure, 25oC, and pCO2=10^-3.5 bar as an initial condition, students will write down chemical reactions that dissolve CO2 and H2CO3, which further dissociates into protons and bicarbonate. Then students will look for data for equilibrium constants for these reactions and calculate the pH of the final solution.
Then do the same calculation again when atmospheric CO2 concentration doubles and compare pH values in two scenarios.
Teaching Notes and Tips
References and Resources
I use two books for reference and resources:
The geochemistry of natural waters by James I. Drever
Aqueous Environmental Geochemistry by Donald Langmuir.