The predominant forms of heavy metals (Zn, Pb, Fe, Cu, Ni, etc.) in aerobic sediments arethe carbonates and the oxide or hydroxide forms. An important consideration in modelingthe sediment is the stable chemical form of the metal in question. Consider the reaction:AG = 25 kJ/molPb(OH)₂ (s) + CO₂(aq) ↔ PbCO3(s) + H₂Oa. At what partial pressure of CO2(g) will Pb(OH)2(s) and PbCO3(s) be at equilibrium?b. If the system is at equilibrium with the atmosphere, Pco2=10-3-4 atm, calculate AG forthe reaction. What is the stable form of lead in the sediments?

The predominant forms of heavy metals (Zn, Pb, Fe, Cu, Ni, etc.) in aerobic sediments are the carbonates and the oxide or hydroxide forms. An important consideration in modeling the sediment is the stable chemical form of the metal in question. Consider the reaction: AGO = 25 kJ/mol Pb(OH)₂(s) + CO₂ (aq)↔ PbCO3(s) + H₂O a. At what partial pressure of CO₂(g) will Pb(OH)2(s) and PbCO3(s) be at equilibrium? b. If the system is at equilibrium with the atmosphere, Pco2=10-34 atm, calculate AG for the reaction. What is the stable form of lead in the sediments?

The predominant forms of heavy metals (Zn, Pb, Fe, Cu, Ni, etc.) in aerobic sediments are the carbonates and the oxide or hydroxide forms. An important consideration in modeling the sediment is the stable chemical form of the metal in question. Consider the reaction: AGO = 25 kJ/mol Pb(OH)₂(s) + CO₂ (aq)↔ PbCO3(s) + H₂O a. At what partial pressure of CO₂(g) will Pb(OH)2(s) and PbCO3(s) be at equilibrium? b. If the system is at equilibrium with the atmosphere, Pco2=10-34 atm, calculate AG for the reaction. What is the stable form of lead in the sediments?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 92QRT

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