ndirect EDTA determination of cesium. Cesium ion does not form a strong EDTA complex, but it can be analyzed by adding a known volume of NaBil, in cold concentrated acetic acid containing excess Nal. Solid Cs, Bi, I, is precipitated, filtered, and emoved. The excess yellow Bil, is then titrated with EDTA. The end point occurs when the yellow color disappears. (Sodium hiosulfate is used in the reaction to prevent the liberated I from being oxidized to yellow aqueous I, by O, from the air.) The orecipitation is fairly selective for Cst. The ions Lit, Na*, K*, and low concentrations of Rbt do not interfere, although TIt loes. Suppose that 23.00 mL of an unknown containing Cs+ were treated with 23.00 mL of 0.07719 M NaBil, and the inreacted Bil, required 18.74 mL of 0.0552 M EDTA for a complete titration. Find the concentration of Cs+ in the unknown. [Cs*] =

ndirect EDTA determination of cesium. Cesium ion does not form a strong EDTA complex, but it can be analyzed by adding a known volume of NaBil, in cold concentrated acetic acid containing excess Nal. Solid Cs, Bi, I, is precipitated, filtered, and emoved. The excess yellow Bil, is then titrated with EDTA. The end point occurs when the yellow color disappears. (Sodium hiosulfate is used in the reaction to prevent the liberated I from being oxidized to yellow aqueous I, by O, from the air.) The orecipitation is fairly selective for Cst. The ions Lit, Na, K, and low concentrations of Rbt do not interfere, although TIt loes. Suppose that 23.00 mL of an unknown containing Cs+ were treated with 23.00 mL of 0.07719 M NaBil, and the inreacted Bil, required 18.74 mL of 0.0552 M EDTA for a complete titration. Find the concentration of Cs+ in the unknown. [Cs*] =

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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