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Analysis of the calcium content in water

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The analysis of Ca2+and Mg2+in urine samples could be performed in a way similar to the EDTA analysis of the calcium content in water. For example, a 25.0 mL aliquot of a urine sample (buffered to pH = 10.0) required 17.2 mL of 0.0776 M EDTA to react with all of the Ca2+and Mg2+ions in the sample. Then another identical 25.0 mL urine sample was analyzed, except this one was treated with NaOH to precipitate all of the Mg2+from the solution. This second solution required 13.2 mL of the 0.0776 M EDTA to react with the Ca2+ions. Report the moles of Ca2+and Mg2+in the urine

Reference no: EM131066799

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