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In order to analyze for Mg and Ca, a 24-hour urine sample was diluted to 2.000...

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Chemistry

In order to analyze for Mg and Ca, a 24-hour urine sample wasdiluted to 2.000 L. After the solution was buffered to pH 10, a10.00 mL aliquot was titrated with 44.96 mL of 0.003474 M EDTA. Thecalcium in a second 10.00 mL aliquot was isolated as CaC2O4,redissolved in acid, and titrated with 17.35 mL of the EDTAsolution. (Note: Normal levels for magnesium are 15 to 300 mg perday and for calcium are 50 to 400 mg per day.)

How many mg of Ca were in the original sample?

How many mg of Mg were in the original sample?

Answer & Explanation Solved by verified expert
3.8 Ratings (535 Votes)
The EDTA bonds to the metal ions in a ratio 11 mol of EDTA second aliquot 0003474M x 1735x103L 602739x105 mol mol of Ca in the aliquot The second aliquot is taken because    See Answer
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