Which rapid and quantitative analysis requires a sample solution of metal ion to be titrated against a standard solution of EDTA, in the presence of a buffer?* Alkalimetric Replacement Back Titration Direct Which agent is added into a solution if direct titration is deemed to proceed slowly?* Indicator Titrant Catalyst Demasking agent Which method uses an excess solution of EDTA added to a sample and then pH is adjusted for back titration with a metal ion solution?* Replacement Residual Alkalimetric Direct Which reagent will form a more stable complex with interfering ions rather than the with the indicator and EDTA?* Masking agents Demasking agents Chelating agents Complex agents Which of the following contains a set of incorrectly paired words?* Chelatometry - Complexation / Precipitimetry - Argentometric Lewis acid - electron acceptor / Lewis base - electron donor Titrant + Indicator / Analyte + sample
Which rapid and quantitative analysis requires a sample solution of metal ion to be titrated against a standard solution of EDTA, in the presence of a buffer?* Alkalimetric Replacement Back Titration Direct Which agent is added into a solution if direct titration is deemed to proceed slowly?* Indicator Titrant Catalyst Demasking agent Which method uses an excess solution of EDTA added to a sample and then pH is adjusted for back titration with a metal ion solution?* Replacement Residual Alkalimetric Direct Which reagent will form a more stable complex with interfering ions rather than the with the indicator and EDTA?* Masking agents Demasking agents Chelating agents Complex agents Which of the following contains a set of incorrectly paired words?* Chelatometry - Complexation / Precipitimetry - Argentometric Lewis acid - electron acceptor / Lewis base - electron donor Titrant + Indicator / Analyte + sample
Chemical Principles in the Laboratory
11th Edition
ISBN:9781305264434
Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi
Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi
Chapter27: Relative Stabilities Of Complex Ions And Precipitates Prepared From Solutions Of Copper(ii)
Section: Chapter Questions
Problem 1ASA
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Question
Which rapid and quantitative analysis requires a sample solution of metal ion to be titrated against a standard solution of EDTA, in the presence of a buffer?*
Alkalimetric
Replacement
Back Titration
Direct
Which agent is added into a solution if direct titration is deemed to proceed slowly?*
Indicator
Titrant
Catalyst
Demasking agent
Which method uses an excess solution of EDTA added to a sample and then pH is adjusted for back titration with a metal ion solution?*
Replacement
Residual
Alkalimetric
Direct
Which reagent will form a more stable complex with interfering ions rather than the with the indicator and EDTA?*
Masking agents
Demasking agents
Chelating agents
Complex agents
Which of the following contains a set of incorrectly paired words?*
Chelatometry - Complexation / Precipitimetry - Argentometric
Lewis acid - electron acceptor / Lewis base - electron donor
Titrant + Indicator / Analyte + sample
Direct titration = for Ca and Mg / Indirect titration - for Al and Bi
Which is the Lewis base in a complexation reaction?*
Metal
Ligand
Complex
Hydroxide ion
At what pH does EDTA become a strong complexing agent?*
4
6
8
10
Which best describes the characteristic of an indicator in a direct EDTA titration?*
Binds with the ligand and changes color when freed
Binds with the metal and changes color when freed
Changes color when binding with the complex formed
The ligand itself is the indicator
Which of the following does NOT form a 1:1 ratio with an EDTA molecule?*
Li
Mg
Bi
Al
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