Kc is 1.67 × 1020 at 25°C for the formation of iron(III) oxalate complex ion: Fe3+(aq) + 3 C2O42-(aq) ⇌ [Fe(C2O4) 3]3-(aq) .
If 0.0800 M Fe3+ is initially mixed with 1.00 M oxalate ion,what is the concentration of Fe3+ ion at equilibrium?
A) 1.09 × 10-21 M
B) 0.0100 M
C) 2.09 × 1019 M
D) 1.97 × 1021 M
Correct Answer:
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