A 25.0 mL aliquot of 0.0560 M EDTA was added to a 60.0 mL solution containing an unknown concentration of V3+ . All of the V3+ present in the solution formed a complex with EDTA , leaving an excess of EDTA in solution. This solution was back-titrated with a 0.0390 M Ga3+ solution until all of the EDTA reacted, requiring 11.0 mL of the Ga3+ solution. What was the original concentration of the V3+ solution?
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A 25.0 mL aliquot of 0.0560 M EDTA was added to a 60.0 mL solution containing...