0
Titration is not carried out in an acid medium in EDTA method because at low pH levels, the formation of metal-EDTA complexes is hindered, leading to inaccurate results. The EDTA molecule itself is stable at a slightly alkaline pH, which enhances its chelating ability and ensures more accurate complex formation with metal ions.
What else can I help you with?
Why tartaric assay method falls under alkalimetric direct titration method?
The tartaric assay method falls under the alkalimetric direct titration method because it involves the direct titration of tartaric acid with a standardized alkali solution to determine its concentration. The method is based on the neutralization reaction between the tartaric acid and the alkali, which allows for the quantitative determination of the tartaric acid content present in the sample.
Why the titration have to be carried out immediately after the addition of sulphuric acid?
Titration should be carried out immediately after the addition of sulfuric acid to prevent any chemical reactions or changes in the sample that could affect the accuracy of the titration results. Waiting could lead to altered concentration levels or other undesired reactions that could affect the titration process.
Why oxalic acid is acidified before titration?
Oxalic acid is acidified before titration to provide a medium that favors the reaction of the analyte with the titrant while minimizing interference from other substances. Acidification ensures that the oxalic acid dissociates fully to its acidic form, allowing for a more accurate and precise titration.
What is the laboratory method used to determine the concentration of an acid?
One common method to determine the concentration of an acid is titration. In an acid-base titration, a solution of known concentration (titrant) is added to the acid solution until the reaction is complete, as indicated by a color change with an indicator or a pH meter. The volume of titrant used is then used to calculate the concentration of the acid.
What are the method of titration?
The methods of titration include acid-base titration, redox titration, and complexometric titration. Acid-base titration involves the reaction between an acid and a base to determine the concentration of one of the reactants. Redox titration involves oxidation-reduction reactions to determine the concentration of a substance. Complexometric titration involves the formation of a complex between a metal ion and a complexing agent to determine the concentration of the metal ion.
Why tartaric assay method falls under alkalimetric direct titration method?
The tartaric assay method falls under the alkalimetric direct titration method because it involves the direct titration of tartaric acid with a standardized alkali solution to determine its concentration. The method is based on the neutralization reaction between the tartaric acid and the alkali, which allows for the quantitative determination of the tartaric acid content present in the sample.
Why the titration have to be carried out immediately after the addition of sulphuric acid?
Titration should be carried out immediately after the addition of sulfuric acid to prevent any chemical reactions or changes in the sample that could affect the accuracy of the titration results. Waiting could lead to altered concentration levels or other undesired reactions that could affect the titration process.
Why oxalic acid is acidified before titration?
Oxalic acid is acidified before titration to provide a medium that favors the reaction of the analyte with the titrant while minimizing interference from other substances. Acidification ensures that the oxalic acid dissociates fully to its acidic form, allowing for a more accurate and precise titration.
What is the laboratory method used to determine the concentration of an acid?
One common method to determine the concentration of an acid is titration. In an acid-base titration, a solution of known concentration (titrant) is added to the acid solution until the reaction is complete, as indicated by a color change with an indicator or a pH meter. The volume of titrant used is then used to calculate the concentration of the acid.
What are the method of titration?
The methods of titration include acid-base titration, redox titration, and complexometric titration. Acid-base titration involves the reaction between an acid and a base to determine the concentration of one of the reactants. Redox titration involves oxidation-reduction reactions to determine the concentration of a substance. Complexometric titration involves the formation of a complex between a metal ion and a complexing agent to determine the concentration of the metal ion.
Why we can not use HNO3 and HCL for creating acidic medium in this titration?
HNO3 and HCl cannot be used together to create an acidic medium in a titration because they will react and form a precipitate of AgCl, which interferes with the titration. It is important to choose a suitable acid that will not interfere with the reaction being studied in the titration.
Why acid is added in KMnO4 titration?
Acid is added in KMnO4 titration to provide an acidic medium, which helps to stabilize the oxidizing agent MnO4-. The acidic solution also helps to prevent the premature reduction of permanganate ions and ensures a clear endpoint in the titration by facilitating the reaction with the analyte.
What is the role of nitric acid in the estimation of aluminium by titration method?
Eliminate any other unwanted reactant(s), that may interfere with the titration.
Why is it necessary to acidify iron with h2so4 during redox titration?
Acidifying iron with H2SO4 during redox titration helps in preventing the hydrolysis of iron(III) ions, which can form insoluble hydroxides and interfere with the titration results. The acid medium also helps to ensure that the redox reaction between the iron and the titrant is carried out effectively and selectively.
Is titration acid or base?
titration is a method by which a solution of known concentration is used to determine the unknown concentration of a second solution. Titration methods are based on reactions that are completed quickly such as the mixing of an acid and base.
Why nitric acid is used in volhard method?
Nitric acid is used in the Volhard method to oxidize Fe(II) to Fe(III) in order to prevent interference in the titration of chloride ions with silver nitrate. By converting Fe(II) to Fe(III), nitric acid ensures accurate and precise results in the determination of chloride content.
How do you determine the concentration of concentrated hydrochloric acid?
Method: titration with a standardized solution of sodium (or potassium) hydroxide.
