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Hydrogen ion (acid) has extra electrons which can be donated so the reaction can take place, whereas oxygen can accept those ions to form water in the product. That's why redox reactions always start of in a acidic solution and end up in a neutral/basic solution.
Oxidation-reduction titrations are conducted in acidic medium to prevent the hydrolysis of metal ions and provide a stable environment for redox reactions. In an acidic medium, metal ions remain in their ionic form and are more soluble, allowing for better accuracy and precision in the titration process. Additionally, the acidic environment helps to stabilize the redox reaction and ensure reliable results.
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Why H2SO4 used in oxidation reduction titration?
H2SO4 is used in oxidation-reduction titrations as a medium to provide the necessary acidic conditions for the reaction to occur. It also helps to stabilize the oxidation state of the species being titrated, ensuring accurate results. Additionally, sulfuric acid can act as a catalyst in some redox reactions, facilitating the reaction process.
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.
Why titration of potassium permanganate is carried out in acidic medium?
Potassium permanganate undergoes reduction in acidic medium which generates a color change that can be easily observed, making it suitable for use as an oxidizing agent in titrations. Additionally, the acidic medium prevents the premature reaction of permanganate ions with reducing agents present in the solution before the titration is conducted.
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 was HCL added for the titration f Vitamin C?
Hydrochloric acid (HCl) is added to the titration of vitamin C to acidify the solution and provide a suitable acidic medium for the reaction between vitamin C and iodine to occur. The acid helps in the oxidation of ascorbic acid (vitamin C) by iodine, which is essential for determining the vitamin C content accurately through titration.
Why the oxidation reduction titration must be in basic medium?
It is not mandatory; acids are also titrated.
Why H2SO4 used in oxidation reduction titration?
H2SO4 is used in oxidation-reduction titrations as a medium to provide the necessary acidic conditions for the reaction to occur. It also helps to stabilize the oxidation state of the species being titrated, ensuring accurate results. Additionally, sulfuric acid can act as a catalyst in some redox reactions, facilitating the reaction process.
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.
Why titration of potassium permanganate is carried out in acidic medium?
Potassium permanganate undergoes reduction in acidic medium which generates a color change that can be easily observed, making it suitable for use as an oxidizing agent in titrations. Additionally, the acidic medium prevents the premature reaction of permanganate ions with reducing agents present in the solution before the titration is conducted.
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 was HCL added for the titration f Vitamin C?
Hydrochloric acid (HCl) is added to the titration of vitamin C to acidify the solution and provide a suitable acidic medium for the reaction between vitamin C and iodine to occur. The acid helps in the oxidation of ascorbic acid (vitamin C) by iodine, which is essential for determining the vitamin C content accurately through titration.
Why was an acid added to the iron II ammonium solution before titration?
The acid is added to the iron II ammonium solution to prevent oxidation of iron II ions to iron III ions, which could lead to an inaccurate titration result. The acid helps maintain the iron II ions in their reduced state for the titration with the permanganate solution.
Why is an acidic titration medium a requirement of the vol hard?
An acidic titration medium is required in a Volhard method for chloride determination because it prevents the precipitation of silver chloride as a solid. Keeping the solution acidic ensures that the silver chloride formed during the titration remains in solution as AgCl^- ions, allowing for accurate measurement of the endpoint.
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.
How do you detect the equivalence point in acidic medium?
In acidic medium, the equivalence point can be detected using an acid-base indicator that undergoes a color change at the pH corresponding to the equivalence point. Alternatively, a pH meter can be used to monitor the pH of the solution during the titration, with the equivalence point identified as the point of maximum change in pH.
Why it is recommended to prepare ferrous ammonium sulfate solution in acidic medium?
Ferrous ammonium sulfate is prone to oxidation, forming insoluble iron hydroxides. Preparing the solution in an acidic medium helps to prevent oxidation of ferrous ions to ferric ions, ensuring the stability of the solution and enhancing its accuracy for titrations or other analytical procedures. Additionally, the acidic medium helps to maintain the solubility of the compound.
Why use h2so4 instead of hcl in titration of kmno4?
H2SO4 is typically used instead of HCl in the titration of KMnO4 because HCl can react with KMnO4 and form chlorine gas, which can interfere with the titration results. Additionally, H2SO4 provides the required acidic medium for the reaction to occur between KMnO4 and the analyte.
