(Answered) Edta was used for the aqueous solution titration to

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EDTA was used for the aqueous solution titration to determine the amount of calcium ions in the sample. Calculate the fraction of EDTA that exists as Y^4- at pH 10, and from this calculate pCa in 100 mL of solution of 0.100 M Ca^2+ at pH 10 after adding 100 mL of 0.100 M EDTA.

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