How Much Metallic Ion Can Remain at Equilibrium in Fe(OH)3 Solution?

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The discussion focuses on calculating the concentration of Fe3+ ions in a solution of Fe(OH)3 with a hydroxide ion concentration of [OH-] = 1.0 x 10-4 mol/L and a solubility product constant (Ksp) of 6.0 x 10-38. The calculation requires additional information, specifically the volume of the solution, to determine the mass of metallic ions at equilibrium. Without this volume, only the concentration of Fe3+ can be derived, not the total mass.

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haber101
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Calculate the milligrams of metallic ion that can remain at equilibrium in a solution of Fe(OH)3 having a [OH-] = 1.0 x 10-4 mol/L and Ksp = 6.0 x 10-38.
 
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You're missing some important information, like the volume of solution.

It's possible to calculate the concentration of Fe3+ from that information, but not the mass.
 

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