Posted by Laura on Wednesday, April 7, 2010 at 11:57am.
What have you been taught about this. CO3^-2 must come from k2; therefore, I would write the ionization and k2 expression.
HCO3^- ==> H^+ + CO3^-2
k2 is of the order of 10^-11. I would plug in 1 x 10^-7 for (H^+) and solve for (CO3^-2).
Substitute (CO3^-2) in Ksp and solve for (Fe^+2)
Check my thinking.
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