An unknown cadmium (II) solution was analyzed polarographically by the method of standard additions. A 25.00 mL sample of the unknown solution produced a diffusion current of 1.86 µA. Following addition of 5.00 mL aliquot of 2.12 x 10-3 M Cd²+ standard solution to the unknown solution, a diffusion current of a 5.27 µA was produced. Calculate the concentration of Cd²+ in the unknown solution.
An unknown cadmium (II) solution was analyzed polarographically by the method of standard additions. A 25.00 mL sample of the unknown solution produced a diffusion current of 1.86 µA. Following addition of 5.00 mL aliquot of 2.12 x 10-3 M Cd²+ standard solution to the unknown solution, a diffusion current of a 5.27 µA was produced. Calculate the concentration of Cd²+ in the unknown solution.
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter23: Potentiometry
Section: Chapter Questions
Problem 23.7QAP
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