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Choose the correct charge balance equation(s) for a solution prepared by mixing equal volumes of 0.050...

Choose the correct charge balance equation(s) for a solution prepared by mixing equal volumes of 0.050 M sodium oxalate, Na2C2O4 (aq), and 0.010 M ammonium chloride, NH4Cl (aq), without making any assumptions about pH.

a. [NH4 +] + [NH3] = [H2C2O4] + [HC2O4 – ] + [C2O4 2–]

b. [NH4 +] + [NH3] = [H2C2O4] + [HC2O4 – ] + 2[C2O4 2–]

c. [NH4 +] + [H3O+] = [HC2O4 –] + [C2O4 2–] + [OH– ]

d. [NH4 +] + [H3O+] = [HC2O4 –] + 2[C2O4 2–] + [OH–]

e. [NH4 +] + [Na+] + [H3O+] = [HC2O4 –] + [C2O4 2–] + [Cl– ] + [OH– ]

f. [NH4 +] + [Na+] + [H3O+] = [HC2O4 – ] + 2[C2O4 2–] + [Cl– ] + [OH– ]

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