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7. Seneca Lake, a freshwater lake with a surface area of 173 km and an average depth of 92.2 m is the largest and deepest of the 11 Finger Lakes in central New York State. The sediments of the lake are found to contain significant amounts of calcium carbonate (Caco). The concentration of calcium ions (Ca) in the lake is 43 mg/, and the pH of the lake is 8.5. The rolevant reactions are given in your notes (Carbonate System Chemistry). a. Assuming that the water in the lake is in equilibrium with Caco calculate the concentrations of H, OH, co,, and HCo,, in the lake. Report your answers in mol/ b. Calculate the alkalinity of the lake. Report your answer in as moles/ c. Calculate the total moles of H could be neutralized by the alkalinity of the lake. Ans a) OH 3.16 x 10 moles/ co,4.25 x 10moles, HCo,287 10 males a0x1omale, 477

7. Seneca Lake, a freshwater lake with a surface area of 173 km and an average depth of 92.2 m is the largest and deepest of the 11 Finger Lakes in central New York State. The sediments of the lake are found to contain significant amounts of calcium carbonate (Caco). The concentration of calcium ions (Ca) in the lake is 43 mg/, and the pH of the lake is 8.5. The rolevant reactions are given in your notes (Carbonate System Chemistry). a. Assuming that the water in the lake is in equilibrium with Caco calculate the concentrations of H, OH, co,, and HCo,, in the lake. Report your answers in mol/ b. Calculate the alkalinity of the lake. Report your answer in as moles/ c. Calculate the total moles of H could be neutralized by the alkalinity of the lake. Ans a) OH 3.16 x 10 moles/ co,4.25 x 10moles, HCo,287 10 males a0x1omale, 477

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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7. Seneca Lake, a freshwater lake with a surface area of 173 km and an average depth of 922 m, is the largest and deepest of the 1n Finger Lakes in central New York State. The sediments of the lake are found to contain significant amounts of calcium carbonate (CaCo). The concentration of calcium ions (Ca) in the lake is 43 mg/L, and the pH of the lake is 8.5. The rolevant reactions are given in your notes (Carbonate System Chemistry). a. Assuming that the water in the take is in equilibrium with Caco, calculate the concentrations of H, OH", co,, and HCO,, in the lake. Report your answers in mo/L. b. Calculate the alkalinity of the lake. Report your answer in as moles/L. c. Calculate the total moles of H could be neutralized by the alkalinity of the lake. Ans: a) OH=3.16 x 10 moles/L co. 4.25x 10 moles/: HCO,287 x 10moles/L bị 3.0x 10malesL e) 4.77x 10moles
Transcribed Image Text:7. Seneca Lake, a freshwater lake with a surface area of 173 km and an average depth of 922 m, is the largest and deepest of the 1n Finger Lakes in central New York State. The sediments of the lake are found to contain significant amounts of calcium carbonate (CaCo). The concentration of calcium ions (Ca) in the lake is 43 mg/L, and the pH of the lake is 8.5. The rolevant reactions are given in your notes (Carbonate System Chemistry). a. Assuming that the water in the take is in equilibrium with Caco, calculate the concentrations of H, OH", co,, and HCO,, in the lake. Report your answers in mo/L. b. Calculate the alkalinity of the lake. Report your answer in as moles/L. c. Calculate the total moles of H could be neutralized by the alkalinity of the lake. Ans: a) OH=3.16 x 10 moles/L co. 4.25x 10 moles/: HCO,287 x 10moles/L bị 3.0x 10malesL e) 4.77x 10moles
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