neutral. The column is now To save time on rinsing glassware, use one 10-m graduated cylinder for the HCI and one for the DI H₂C The automatic pipet should be used for the hard wate only. Part II. Ion-Exchange Properties 1. Place a 125-mL Erlenmeyer flask under the column. 2. Using the glass dropper, add 5 drops of 1 M CuSO4 tc the column (return the CuSO4 dropper bottle to the fume hood right away) and add 5 mL of DI H₂O. Observe the colors of the resin and the eluate (you may want to place a piece of white paper under the flask). Test the eluate with litmus paper. 3. Pour some of the eluate into a test tube (about a finger's width) and add 1 drop of 0.1 M BaCl2. The formation of a white precipitate (BaSO4) indicates the presence of sulfate. Include the chemical equation for this reaction in your notebook preparation. 4. Place an empty beaker under the column and regenerate the column by repeating steps 6 & 7 from Part I. Observe the colors of the resin and the eluate after the addition of HC1.

neutral. The column is now To save time on rinsing glassware, use one 10-m graduated cylinder for the HCI and one for the DI H₂C The automatic pipet should be used for the hard wate only. Part II. Ion-Exchange Properties 1. Place a 125-mL Erlenmeyer flask under the column. 2. Using the glass dropper, add 5 drops of 1 M CuSO4 tc the column (return the CuSO4 dropper bottle to the fume hood right away) and add 5 mL of DI H₂O. Observe the colors of the resin and the eluate (you may want to place a piece of white paper under the flask). Test the eluate with litmus paper. 3. Pour some of the eluate into a test tube (about a finger's width) and add 1 drop of 0.1 M BaCl2. The formation of a white precipitate (BaSO4) indicates the presence of sulfate. Include the chemical equation for this reaction in your notebook preparation. 4. Place an empty beaker under the column and regenerate the column by repeating steps 6 & 7 from Part I. Observe the colors of the resin and the eluate after the addition of HC1.

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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