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In iodometric titration, color changes may not be observed because the iodine produced does not have a distinctive color, especially when combined with starch as an indicator. Instead, the end point is typically detected by a color change from blue-black to colorless when the starch-iodine complex is reduced by the analyte.
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What are iodometric and iodometric titration?
Iodometric titration involves determining the concentration of a substance by measuring the amount of iodine generated in a reaction. Iodometric titration, on the other hand, refers to a type of redox titration that uses iodine as the titrant to determine the amount of a substance, typically an oxidizing agent, present in a sample.
Why you do not use H2SO4 in iodometric titration?
Using H2SO4 in iodometric titration can lead to the formation of H2O2, which interferes with the reaction. It can also oxidize iodide ions prematurely, affecting the accuracy of the titration. Therefore, a different acid like HCl is typically used in iodometric titration.
What is the difference between iodometric titration and iodimetric titration?
Iodometric titration involves the titration of iodine with a reducing agent, while iodimetric titration involves the titration of iodide with an oxidizing agent. In iodometric titration, iodine is detected by a starch indicator to determine the end point, while in iodimetric titration, iodide ion concentration is determined by titration with a standard solution of an oxidizing agent.
Is iodometric titration and redox titration is same?
No, they are not the same, but 1 is part of 2.Iodometric titration is just one of the (larger) group (or class) of oxidimetric titrations, which in turn is part of the much (larger) group (or class) of volumetric analysis method.
Can we carry out an iodometric titration using a potentiometer?
No, iodometric titration is typically done using a standard titration setup with a burette and indicator to detect the endpoint. A potentiometer measures the voltage produced in a system, making it unsuitable for this type of titration.
What are iodometric and iodometric titration?
Iodometric titration involves determining the concentration of a substance by measuring the amount of iodine generated in a reaction. Iodometric titration, on the other hand, refers to a type of redox titration that uses iodine as the titrant to determine the amount of a substance, typically an oxidizing agent, present in a sample.
Why you do not use H2SO4 in iodometric titration?
Using H2SO4 in iodometric titration can lead to the formation of H2O2, which interferes with the reaction. It can also oxidize iodide ions prematurely, affecting the accuracy of the titration. Therefore, a different acid like HCl is typically used in iodometric titration.
What is the difference between iodometric titration and iodimetric titration?
Iodometric titration involves the titration of iodine with a reducing agent, while iodimetric titration involves the titration of iodide with an oxidizing agent. In iodometric titration, iodine is detected by a starch indicator to determine the end point, while in iodimetric titration, iodide ion concentration is determined by titration with a standard solution of an oxidizing agent.
Is iodometric titration and redox titration is same?
No, they are not the same, but 1 is part of 2.Iodometric titration is just one of the (larger) group (or class) of oxidimetric titrations, which in turn is part of the much (larger) group (or class) of volumetric analysis method.
Can we carry out an iodometric titration using a potentiometer?
No, iodometric titration is typically done using a standard titration setup with a burette and indicator to detect the endpoint. A potentiometer measures the voltage produced in a system, making it unsuitable for this type of titration.
Why analysis of Cu from brass solution is considered as an iodometric titration?
Copper in brass can be oxidized to Cu2+ by iodine in a redox reaction. The iodine acts as the titrant in the reaction and the copper is being titrated. It is considered an iodometric titration due to the involvement of iodine in the titration process.
Why starch is used as indicator in iodometric titration?
Starch is used as an indicator in iodometric titration because it forms a blue color complex with iodine. This helps in visually detecting the endpoint of the titration, which is when all the iodine has been reacted with the analyte. The appearance of the blue color indicates that the reaction is complete.
Why you use iodine in iodometric titration?
Iodine is used in iodometric titration as the titrant because it can easily react with reducing agents to form iodide ions. Its reaction with reducing agents leads to a change in color, making it useful for visual endpoint detection. This allows for the determination of the concentration of the reducing agent being analyzed in the titration process.
What is the name for the point at which the indicator changes color in a titration?
The point at which the indicator changes color in a titration is called the endpoint.
Why starch is added in iodometric titration?
Starch is added in iodometric titration as an indicator to detect the endpoint of the titration. In the presence of iodine, starch forms a blue complex that is easily visible. The appearance of this blue color signifies that all the iodine has reacted with the analyte, helping the person conducting the titration to know when the reaction is complete.
What is the function of NH4CNS in estimation of the amount of copper present in a supplied solution by iodometric method?
NH4CNS (ammonium thiocyanate) is used as an indicator in the estimation of copper by the iodometric method. It forms a red-colored complex with the copper ions, allowing for visual detection of the end-point during the titration process. The indicator changes color when all the copper ions have reacted with the iodine, indicating the endpoint of the titration.
What is the change of oxidation number of sulphur during iodometric titration experiment?
In an iodometric titration experiment, the oxidation number of sulfur changes from -2 in the thiosulfate ion (S2O32-) to +4 in the sulfate ion (SO42-) as sulfur gains oxygen atoms. This change indicates the transfer of electrons and oxidation of sulfur during the reaction.
