At the endpoint, just past the equivalence point, an excess of CI" ions imparts a positive charge to the surface of the precipitate. an excess of CI¯ ions imparts a negative charge to the surface of the precipitate. an excess of Ag* ions imparts a negative charge to the surface of the precipitate. an excess of Ag+ ions imparts a positive charge to the surface of the precipitate.

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter14: Principles Of Neutralization Titrations
Section: Chapter Questions
Problem 14.3QAP
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The Fajans titration uses an adsorption indicator to detect the endpoint of a titration in which a precipitate is formed. For the
titration of CI by Ag*, insoluble AgCl is formed. Indicate what is happening at each step of the titration by completing
each statement.
Transcribed Image Text:The Fajans titration uses an adsorption indicator to detect the endpoint of a titration in which a precipitate is formed. For the titration of CI by Ag*, insoluble AgCl is formed. Indicate what is happening at each step of the titration by completing each statement.
At the endpoint, just past the equivalence point,
an excess of CI" ions imparts a positive charge to the surface of the precipitate.
an excess of CI" ions imparts a negative charge to the surface of the precipitate.
an excess of Ag* ions imparts a negative charge to the surface of the precipitate.
an excess of Ag+ ions imparts a positive charge to the surface of the precipitate.
Transcribed Image Text:At the endpoint, just past the equivalence point, an excess of CI" ions imparts a positive charge to the surface of the precipitate. an excess of CI" ions imparts a negative charge to the surface of the precipitate. an excess of Ag* ions imparts a negative charge to the surface of the precipitate. an excess of Ag+ ions imparts a positive charge to the surface of the precipitate.
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