Answered: Why was HCl added to the unknown…

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Why was HCl added to the unknown sulfate solution before adding the BaCl2 solution?

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter15: Solubility And Complex Lon Equilibria

Section: Chapter Questions

Problem 77AE: A solution contains 0.018 mole each of I, Br, and Cl. When the solution is mixed with 200. mL of...

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Question

a. Why was HCl added to the unknown sulfate solution before adding the BaCl2 solution?

b. Suppose that a small portion of the sulfate precipitated as lead sulfate rather than as barium sulfate. How would this change the result of the analysis?

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