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

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter23: Voltammetry

Section: Chapter Questions

Problem 23.13QAP

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