Select all statements that state the purpose of an auxiliary complexing agent and example of its use. a) A completing agent forms a weak complex with analyte ion, thereby keeping it in solution without interfering with EDTA titration. b) NH3 keeps Zn2+ in solution at high pH, but is easily displaced by EDTA. c) A completing agent forms a strong complex with analyte ion, thereby keeping it in solution without interfering with EDTA titration. d) NH3 keeps Zn2+ in solution at high pH, but is not displaced by EDTA.

Select all statements that state the purpose of an auxiliary complexing agent and example of its use. a) A completing agent forms a weak complex with analyte ion, thereby keeping it in solution without interfering with EDTA titration. b) NH3 keeps Zn2+ in solution at high pH, but is easily displaced by EDTA. c) A completing agent forms a strong complex with analyte ion, thereby keeping it in solution without interfering with EDTA titration. d) NH3 keeps Zn2+ in solution at high pH, but is not displaced by EDTA.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.19QAP

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