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12. (Krauskopf, problem 2-16, 2-17): A solution contains 0.1M total carbonate (CO3², HCO3, H2CO3). Its pH is 6. i. Find the concentration of each carbonate species present. j. If the solution contains 10-4M Ca2+, is it saturated, unsaturated or supersaturated with CaCO3? Ksp for CaCO3 is 10-8.35 (for calcite), 10-8.22 (for aragonite). (Which form of CaCO3 is the more stable of the two?) k. If 1 ml of 6M HCl is added to a liter of the solution in (b), what reaction(s) take place? What is the final pH? Is the solution a buffer? Compare this to what happens if the same 1 ml of 6M HCl is dropped into a liter of pure water.

12. (Krauskopf, problem 2-16, 2-17): A solution contains 0.1M total carbonate (CO3², HCO3, H2CO3). Its pH is 6. i. Find the concentration of each carbonate species present. j. If the solution contains 10-4M Ca2+, is it saturated, unsaturated or supersaturated with CaCO3? Ksp for CaCO3 is 10-8.35 (for calcite), 10-8.22 (for aragonite). (Which form of CaCO3 is the more stable of the two?) k. If 1 ml of 6M HCl is added to a liter of the solution in (b), what reaction(s) take place? What is the final pH? Is the solution a buffer? Compare this to what happens if the same 1 ml of 6M HCl is dropped into a liter of pure water.

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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12. (Krauskopf, problem 2-16, 2-17): A solution contains 0.1M total carbonate (CO3², HCO3, H2CO3). Its pH is 6. i. Find the concentration of each carbonate species present. j. If the solution contains 10-4M Ca2+, is it saturated, unsaturated or supersaturated with CaCO3? Ksp for CaCO3 is 10-8.35 (for calcite), 10-8.22 (for aragonite). (Which form of CaCO3 is the more stable of the two?) k. If 1 ml of 6M HCl is added to a liter of the solution in (b), what reaction(s) take place? What is the final pH? Is the solution a buffer? Compare this to what happens if the same 1 ml of 6M HCl is dropped into a liter of pure water.
Transcribed Image Text:12. (Krauskopf, problem 2-16, 2-17): A solution contains 0.1M total carbonate (CO3², HCO3, H2CO3). Its pH is 6. i. Find the concentration of each carbonate species present. j. If the solution contains 10-4M Ca2+, is it saturated, unsaturated or supersaturated with CaCO3? Ksp for CaCO3 is 10-8.35 (for calcite), 10-8.22 (for aragonite). (Which form of CaCO3 is the more stable of the two?) k. If 1 ml of 6M HCl is added to a liter of the solution in (b), what reaction(s) take place? What is the final pH? Is the solution a buffer? Compare this to what happens if the same 1 ml of 6M HCl is dropped into a liter of pure water.
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