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Calcium Carbonate and the pH of Lake Water

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The pH in a lake the size of 4.0 km X 7.0 km and an average depth of 100 m is found to be 4.5. Calculate the mass of calcium carbonate that must be added to the lake water in order to raise its pH to 6.0, assuming the reaction of H+ with CaCO3 gives CO2 here (answer in grams).

Hint: Calculate volume of lake, change of H+ concentration, mol of calcium carbonate required.

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Solution Summary

This solution explains how to calculate the mass of calcium carbonate needed to raise the pH of lake water to 6.0 in an attached Word document.