Calcium carbonate is sparingly soluble in water. CACO:(s) = Ca²“(aq) + CO;² (aq) Kp = 3.4 x 109 Calculate the solubility of CaCO; in sea water containing 0.01 mol L-' of Ca²* ions. (a) (b) Given the additional information below and using the Henderson Hasselbalch equation, what is the major form of carbonate in sea water and why? pH sea water = 8.1 H;CO; pKa1 = 6.35 HCO, pK2 = 10.33 (c) Write down the relevant equilibria and explain why the actual solubility of calcium carbonate (4.6 × 10-7 mol L-') is higher than the value you determined in part (a)?
Calcium carbonate is sparingly soluble in water. CACO:(s) = Ca²“(aq) + CO;² (aq) Kp = 3.4 x 109 Calculate the solubility of CaCO; in sea water containing 0.01 mol L-' of Ca²* ions. (a) (b) Given the additional information below and using the Henderson Hasselbalch equation, what is the major form of carbonate in sea water and why? pH sea water = 8.1 H;CO; pKa1 = 6.35 HCO, pK2 = 10.33 (c) Write down the relevant equilibria and explain why the actual solubility of calcium carbonate (4.6 × 10-7 mol L-') is higher than the value you determined in part (a)?
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter16: Solubility And Precipitation Equilibria
Section: Chapter Questions
Problem 70AP
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