A pH controller that feeds NaOH to a chromium precipitation tank is set to pH 6.2, which enables most of the dissolved chromium to be removed from a metal plating waste stream and be recovered as a chromium hydroxide precipitate. If the pKsp of Cr(OH); is 30.2, what will be the equilibrium dissolved chromium concentration (in ppb) remaining in solution after the precipitate has completely settled from the treated water?

A pH controller that feeds NaOH to a chromium precipitation tank is set to pH 6.2, which enables most of the dissolved chromium to be removed from a metal plating waste stream and be recovered as a chromium hydroxide precipitate. If the pKsp of Cr(OH); is 30.2, what will be the equilibrium dissolved chromium concentration (in ppb) remaining in solution after the precipitate has completely settled from the treated water?

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter20: Applications Of Oxidation/reduction Titrations

Section: Chapter Questions

Problem 20.26QAP

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