Ethylenediaminetetraacetic acid (abbreviated H4EDTA) is a
Chapter 19, Problem 19.150(choose chapter or problem)
Ethylenediaminetetraacetic acid (abbreviated H4EDTA) is a tetraprotic acid. Its salts are used to treat toxic metal poisoning by forming soluble complex ions that are then excreted. Because EDTA4? also binds essential calcium ions, it is often administered as the calcium disodium salt. For example, when Na2Ca(EDTA) is given to a patient, the [Ca(EDTA)]2? ions react with circulating Pb2? ions and the metal ions are exchanged: A child has a dangerous blood lead level of 120 ?g/100 mL. If the child is administered 100. mL of 0.10 M Na2Ca(EDTA), assuming the exchange reaction and excretion process are 100% efficient, what is the final concentration of Pb2? in ?g/100 mL blood? (Total blood volume is 1.5 L.)
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