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Why do we use a wavelength of 540 nm for KMNO4?
A wavelength of 540 nm is used for potassium permanganate (KMnO4) because it corresponds to the absorption maximum of the permanganate ion (MnO4-) in solution. At this specific wavelength, the absorbance is directly proportional to the concentration of permanganate ions, making it ideal for quantifying the amount of KMnO4 present in a sample.
Why HCL is not use to acidify KMnO4 soln in permanganometric titration?
HCl cannot be used to acidify KMnO4 solution in permanganometric titration because it will react with KMnO4 reducing it to MnO2, which interferes with the titration process and affects the accuracy of the results. Instead, dilute sulfuric acid (H2SO4) is typically used to acidify the KMnO4 solution, as it does not interfere with the redox reaction between KMnO4 and the analyte.
Redox titrations of ferrous ion with KMnO4 why the HCl is not used in this reaction?
HCl is not used in redox titrations of ferrous ion with KMnO4 because it can react with KMnO4 and interfere with the titration process. HCl can reduce KMnO4, which would lead to inaccurate results by altering the equivalence point of the titration. Instead, a buffer solution is often used to maintain a constant pH during the titration.
Is KMnO4 a base?
No, KMnO4 is not a base. It is a strong oxidizing agent commonly used in redox reactions to oxidize other substances.
What is the compound KMnO4?
Potassium permanganate (KMnO4) is a dark purple, crystalline compound that is commonly used as an oxidizing agent in various chemical reactions. It is soluble in water and known for its powerful oxidizing properties.
Why is NaOH used in oxidation using KMnO4?
NaOH is used in oxidation reactions with KMnO4 to maintain a basic pH, which helps stabilize KMnO4. This ensures that the permanganate ion (MnO4-) remains in its most reactive form, allowing more efficient oxidation of organic compounds. Additionally, NaOH helps to dissolve solid KMnO4 and facilitates the reaction process.
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.
What will happen when CO2 is washed with kmno4 water?
When carbon dioxide (CO2) is washed with potassium permanganate (KMnO4) water, the KMnO4 will be reduced by the CO2 to form a brown precipitate of manganese dioxide (MnO2). This reaction can be used to determine the presence of CO2 in a gas sample by observing the color change from purple (KMnO4) to brown (MnO2).
Which solution may be used to disinfect water?
a dilute aqueous solution of KMnO4 may be used.
Why in titration of kmno4 no indicator is used?
In the titration of KMnO4, no indicator is used because KMnO4 is a self-indicating titrant. It undergoes a color change from purple to colorless (or brown) at the endpoint of the titration, which makes it unnecessary to add an external indicator. The precise endpoint can be easily detected visually, making the use of an indicator redundant.
What does KMnO4 stands for?
It stands for Potassium Permanganate and is usually used to control color, taste, and odors.
What is tollen's reagent and baeyer's reagent?
Tollen's reagent is a test used to detect the presence of aldehydes, as it produces a silver mirror when it reacts with aldehydes, but not with ketones or other compounds. Baeyer's reagent is a solution of potassium permanganate (KMnO4) used to oxidize and distinguish between primary and secondary alcohols. Primary alcohols are oxidized by Baeyer's reagent to form carboxylic acids, while secondary alcohols are oxidized to form ketones.
