The Following Questions Refer to the Following System: 500 $\times$ 10³
[Mn(C₂O₄)₂]^2-
MnC₂O₄ + C₂O₄^2-
K₂ =

Multiple Choice

The following questions refer to the following system: 500.0 mL of 0.020 M Mn(NO₃) ₂ are mixed with 1.0 L of 1.0 M Na₂C₂O₄.The oxalate ion,C₂O₄,acts as a ligand to form a complex ion with the Mn²⁺ ion with a coordination number of two.
Mn²⁺ + C₂O₄^2-
MnC₂O₄
K₁ = 7.9 $\times$ 10³
[Mn(C₂O₄) ₂]^2-
MnC₂O₄ + C₂O₄^2-
K₂ = 1.26 $\times$ 10^-2
-Find the equilibrium concentration of Mn(C₂O₄) in the system.

A) 9.2 $\times$ 10^-5 M
B) 0.01 M
C) 2.5 $\times$ 10^-8 M
D) 1.3 $\times$ 10^-4 M
E) 6.7 $\times$ 10^-3 M