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Why is phenolphthalein indicator not used in EDTA titration?
Phenolphthalein is not suitable for use in EDTA titration because it changes color at a pH range that is much lower than the pH range at which the EDTA-metal complex formation occurs. EDTA titration typically requires indicators that change color in a more acidic pH range.
What is the purpose of standardizing EDTA in Complexometric titration?
Standardizing EDTA in complexometric titration is done to determine its exact molarity or concentration. This is important because the accuracy of the titration results depends on knowing the precise concentration of the EDTA solution being used. By standardizing EDTA, any errors in concentration can be corrected, ensuring accurate and reliable results in the titration process.
What is the function of hhsnna in edta titration?
In EDTA titration, hhsnna (hydroxylamine hydrochloride) is used to reduce any interfering metal ions present in the sample to prevent their titration by the EDTA solution. This helps ensure that the titration results are accurate and only reflect the concentration of the target metal ion being measured.
How does EDTA and titration work?
EDTA is a chelating agent that binds to metal ions. In titration, EDTA is used to determine the concentration of metal ions in a solution by forming a complex with the metal ion. The endpoint of the titration is identified by a color change indicator or a pH meter, indicating that all metal ions have reacted with EDTA.
How many types of indictors are used in titration?
There are two main types of indicators used in titration: color indicators and pH indicators. Color indicators change color at specific pH ranges to indicate the endpoint of the titration, while pH indicators change color based on the pH of the solution.
Why is phenolphthalein indicator not used in EDTA titration?
Phenolphthalein is not suitable for use in EDTA titration because it changes color at a pH range that is much lower than the pH range at which the EDTA-metal complex formation occurs. EDTA titration typically requires indicators that change color in a more acidic pH range.
What is the purpose of standardizing EDTA in Complexometric titration?
Standardizing EDTA in complexometric titration is done to determine its exact molarity or concentration. This is important because the accuracy of the titration results depends on knowing the precise concentration of the EDTA solution being used. By standardizing EDTA, any errors in concentration can be corrected, ensuring accurate and reliable results in the titration process.
What is the function of hhsnna in edta titration?
In EDTA titration, hhsnna (hydroxylamine hydrochloride) is used to reduce any interfering metal ions present in the sample to prevent their titration by the EDTA solution. This helps ensure that the titration results are accurate and only reflect the concentration of the target metal ion being measured.
How does EDTA and titration work?
EDTA is a chelating agent that binds to metal ions. In titration, EDTA is used to determine the concentration of metal ions in a solution by forming a complex with the metal ion. The endpoint of the titration is identified by a color change indicator or a pH meter, indicating that all metal ions have reacted with EDTA.
How many types of indictors are used in titration?
There are two main types of indicators used in titration: color indicators and pH indicators. Color indicators change color at specific pH ranges to indicate the endpoint of the titration, while pH indicators change color based on the pH of the solution.
What are different types of EDTA titration?
1. Direct Titration In direct titration, you simply add an indicator to the solution of the metal ion and titrate with EDTA. Before starting the titration,it is needed to check that the pH of the solution to obtain a good formation constant value and on the other hand indicator colour change as well. 2.Indiract titration EDTA can be used as titrant for anions. Anions can be precipitated with suitable metal ion. Filter and wash the ppt with proper solution. Then boil in excess EDTA to complex metal ion(ppt). Back titrate to determine how much metal ion you had. 3.Back Titration In a back titration an excess of EDTA is added to the metal ion solution, and the excess EDTA is titrated with a known concentration of a second metal ion. The second metal ion must form a weaker complex with EDTA than the analyte ion so the second metal does not displace the analyte ion from its complex with EDTA. 4.Displacement titration Here the analyte is treated with an excess of a second metal bound to EDTA. The analyte ion displaces the second metal from the EDTA complex, and then the second metal is titrated with EDTA.
What kind of indicators are used in precipitation titration?
Indicators used in precipitation titrations are typically complexometric indicators that form colored complexes with the analyte ions. These indicators change color when the endpoint of the titration is reached, signaling the completion of the precipitation reaction. Common complexometric indicators include EDTA, Eriochrome Black T, and Calconcarboxylic acid.
What is role of muraxid in edta titrations?
Muraxid is used as an indicator in EDTA titrations to detect the endpoint of the titration when all the metal ions have been complexed by EDTA. Muraxid forms a colored complex with uncomplexed metal ions, indicating the endpoint of the titration.
What is another example of indicator that used in titration with EDTA?
Another example of an indicator used in a titration with EDTA is Eriochrome Black T. This indicator changes color from red to blue when it forms a complex with metal ions, allowing for the detection of the end point in the titration.
Echnch Rome Blue Black T an indicator in EDTA titration?
Eriochrome Black T is a common indicator used in EDTA titrations, not Echnrome Blue Black T. Eriochrome Black T changes color from blue to magenta when it binds to the metal ions being titrated with EDTA, indicating the endpoint of the titration.
What is difference between external and internal indicators used in titration?
Internal indicators that are used in titration exist in the titration reaction as either a reactant or a product. External indicators is added to the reaction mixture, but does not exist in the reaction.
Why you use muraxide as indicator in EDTA titration?
Muraxide is used as an indicator in EDTA titrations because it forms a distinct wine-red color complex with metal ions, making it easy to detect the endpoint of the titration. Muraxide is specific for detecting the endpoint of calcium and magnesium titrations when using EDTA as the titrant.
