In many titrations, you need to add an indicator that changes color when the titration is complete. The titration of sodium oxalate with potassium permanganate does not use an indicator. However, a pink color does appear to signal the end of the titration. What causes the color change signaling the completed titration of sodium oxalate with potassium permanganate? Select one: Carbon dioxide reacts with excess permanganate, creating a pink complex. The last oxalate ion creates a pink precipitate when enough permanganate has been added. The pink color of the reactant permanganate appears in solution after all of the oxalate has reacted. The manganese product of the reaction has a pink color that only appears after stirring.

In many titrations, you need to add an indicator that changes color when the titration is complete. The titration of sodium oxalate with potassium permanganate does not use an indicator. However, a pink color does appear to signal the end of the titration. What causes the color change signaling the completed titration of sodium oxalate with potassium permanganate? Select one: Carbon dioxide reacts with excess permanganate, creating a pink complex. The last oxalate ion creates a pink precipitate when enough permanganate has been added. The pink color of the reactant permanganate appears in solution after all of the oxalate has reacted. The manganese product of the reaction has a pink color that only appears after stirring.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter15: Additional Aqueous Equilibria

Section: Chapter Questions

Problem 79QRT

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