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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.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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8. 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. 8
Transcribed Image Text:8. 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. 8
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