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Explain the imporatnce of adding HCl during the washing of the initial precipitate

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.9QAP

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

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Explain the imporatnce of adding HCl during the washing of the initial precipitate

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A solution contains 1.0 * 10-2 M Ag+(aq) and 2.0 * 10-2 M Pb2+(aq). When Cl-(aq) is added, both AgCl (Ksp = 1.8 * 10-10) and PbCl2 (Ksp = 1.7 * 10-5) can precipitate. What concentration of Cl-(aq) is necessary to begin the precipitation of each salt? Which salt precipitates first?
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