A blood sample was submitted for electrolyte analysis. The Mg content (known as "ionized magnesium" or IMg") of the blood was determined using an ion-selective electrode that is known to have an electromotive efficiency of 0.945 When placed in a solution containing 10.0 mM Mg²", the electrode produced a potential of 175.0 mV. When placed in the blood sample, the electrode produced a potential of 138.7 mV. Calculate the concentration of Mg?+ in the blood sample. (For a healthy human, IMG2 is between 0.53 and 0.67 mM.) (Report the answer to two significant figures.)
A blood sample was submitted for electrolyte analysis. The Mg content (known as "ionized magnesium" or IMg") of the blood was determined using an ion-selective electrode that is known to have an electromotive efficiency of 0.945 When placed in a solution containing 10.0 mM Mg²", the electrode produced a potential of 175.0 mV. When placed in the blood sample, the electrode produced a potential of 138.7 mV. Calculate the concentration of Mg?+ in the blood sample. (For a healthy human, IMG2 is between 0.53 and 0.67 mM.) (Report the answer to two significant figures.)
Chapter21: Potentiometry
Section: Chapter Questions
Problem 21.15QAP
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