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Consider a solution that is 2.5 x 10-2 M in Fe2+ and 1.6 x 10-2 M...

Consider a solution that is 2.5 x 10-2 M in Fe2+ and 1.6 x 10-2 M in Mg2+. (Ksp for FeCO3 is 3.07 x 10-11 and Ksp for MgCO3 is 6.82 x 10-6.

What minimum concentration of K2CO3 is required to cause the precipitation of the cation that precipitates first?

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