An unknown sample of Librium was analyzed using polarography. A 50 mL sample containing the sample gave a limiting current of 0.40 uA. 5.00 mL of 5.00 mM standard Librium solution was added to the 50 mL sample and diluted to 100 ml. The wave height of the standard containing the sample gave a limiting current of 0.95 UA. What is the concentration of Librium in the unknown sample? a. 0.11 mm b. 0.21 mM c. 0.55 mm d. 2.0 mm e. none of these
An unknown sample of Librium was analyzed using polarography. A 50 mL sample containing the sample gave a limiting current of 0.40 uA. 5.00 mL of 5.00 mM standard Librium solution was added to the 50 mL sample and diluted to 100 ml. The wave height of the standard containing the sample gave a limiting current of 0.95 UA. What is the concentration of Librium in the unknown sample? a. 0.11 mm b. 0.21 mM c. 0.55 mm d. 2.0 mm e. none of these
Chapter11: Dynamic Electrochemistry
Section: Chapter Questions
Problem 5P
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An unknown sample of Librium was analyzed using polarography. A 50 mL sample containing the sample gave a limiting current of 0.40 uA. 5.00 mL of 5.00 mM standard Librium solution was added to the 50 mL sample and diluted to 100 ml. The wave height of the standard containing the sample gave a limiting current of 0.95 UA. What is the concentration of Librium in the unknown sample?
a. 0.11 mm
b. 0.21 mM
c. 0.55 mm
d. 2.0 mm
e. none of these
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