We are designing a new system to disinfect and remove Lf from water in a single step viaozonation and the precipitation of Lf(OH)3 (s) via the following reactions:peoEho,mvO3 (g) + 2H* + 2e- +→ 02 (9) + H2035.062074Lf(OH)3(s) + 2H* + e +→ Lf2+ + 3H2033.872005(a) Write the balanced overall reaction.(b) Calculate the equilibrium constant for the reaction.(c) Ignoring the presence of any complexes, what is the required concentration of O3(g)to decrease the Lf concentration to below 1nM, assuming the pH remains constant atpH = 8 and the dissolved oxygen concentration (DO) is equal to 10 mg/L (Henry'sconstant for O2 is 769 atm/(mol/L) = 31.4 M/M.

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ozonation and the precipitation of Lf(OH)3 (s) via the following reactions: реб Eho, O3 (g) + 2H* + 2e- +→ 02 (9) + H2O 35.06 2074 Lf(OH)3(s) + 2H* + e- +→ Lf2+ + 3H20 33.87 2005 (a) Write the balanced overall reaction. (b) Calculate the equilibrium constant for the reaction.

ozonation and the precipitation of Lf(OH)3 (s) via the following reactions: реб Eho, O3 (g) + 2H* + 2e- +→ 02 (9) + H2O 35.06 2074 Lf(OH)3(s) + 2H* + e- +→ Lf2+ + 3H20 33.87 2005 (a) Write the balanced overall reaction. (b) Calculate the equilibrium constant for the reaction.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter19: The Chemistry Of The Main-group Elements

Section19.4: Extraction By Electrolysis: Sodium, Chlorine, Magnesium, And Aluminium

Problem 19.1PSP

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Question

We are designing a new system to disinfect and remove Lf from water in a single step via
ozonation and the precipitation of Lf(OH)3 (s) via the following reactions:
peo
Eho,
mv
O3 (g) + 2H* + 2e- +→ 02 (9) + H20
35.06
2074
Lf(OH)3(s) + 2H* + e +→ Lf2+ + 3H20
33.87
2005
(a) Write the balanced overall reaction.
(b) Calculate the equilibrium constant for the reaction.
(c) Ignoring the presence of any complexes, what is the required concentration of O3(g)
to decrease the Lf concentration to below 1nM, assuming the pH remains constant at
pH = 8 and the dissolved oxygen concentration (DO) is equal to 10 mg/L (Henry's
constant for O2 is 769 atm/(mol/L) = 31.4 M/M.

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