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To avoid a violent reaction.
What else can I help you with?
What is the charge of hydrogen peroxide?
As H2O2 it is uncharged , but rather unstable., and will slowly decompose to water and oxygen.
Why pottasium permanganate solution kept for few days?
The permanganate solution has to cool and stand overnight before it can be filtered to remove MnO2 (manganese dioxide)Potassium permanganate is not a primary standard. It is difficult to obtain the substance perfectly pure and completely free from manganese dioxide. Moreover, ordinary distilled water is likely to contain reducing substances (traces of organic matter, etc.) which will react with the potassium permanganate to form manganese dioxide. The presence of the latter is very objectionable because it catalyses the auto-decomposition of the permanganate solution on standing. The decomposition:4MnO4- + 2H2O = 4MnO2+3O2+4OH-is catalysed by solid manganese dioxide. Permanganate is inherently unstable in the presence of manganese(II) ions:2MnO4-+3Mn2+ +2H2O = 5MnO2 + 4H+;this reaction is slow in acid solution, but is very rapid in neutral solution. For these reasons, potassium permanganate solution is rarely made up by dissolving weighed amounts of the highly purified (e.g., A.R.) solid in water; it is more usual to heat a freshly prepared solution to boiling and keep it on the steam bath for an hour or so, and then filter the solution through a non-reducing filtering medium, such as purified glass wool or a sintered glass filtering crucible (porosity No. 4).Alternatively, the solution may be allowed to stand for 2-3 days at room temperature before filtration. The glass-stoppered bottle or flask should bc carefully freed from grease and prior deposits of manganese dioxide: this may be done by rinsing with dichromate-sulphuric acid cleaning mixture and then thoroughly with distilled water. Acidic and alkaline solutions are less stable than neutral ones. Solutions of permanganate should be protected from unnecessary exposure to light; a dark-coloured bottle is recommended. Diffuse daylight causes no appreciable decomposition, but bright sunlight slowly decomposes even pure solutions.
What is the reaction of iron sulphate solution with potassium permanganate?
The Mn+7 ions (purple) are reduced to Mn+4 ions (brown), unless some diltue sulfuric acid has been added to the solution. This will make the Mn+7 ions reduce fully to Mn+2 ions (colourless). The end point of the reaction is gotton when there is a permanent pale pink tinge left in the conical flask. (The Potassium Permangante should be in a Burette and be released slowly into the flask containing the Iron Sulfate). HOWEVER: Iron sulfate gets oxidised by Oxygen in air and water and undergoes hydroylisis of water. Therefore you should use a primary standard like Ammonium Iron II sulfate for this reaction.
What happens when you add hydrogen peroxide to liver and why?
What would happen to our cells if they made a poisonous chemical? You might think that they would die. In fact, our cells are always making poisonous chemicals. They do not die because our cells use enzymes to break down these poisonous chemicals into harmless substances. Enzymes are proteins that speed up the rate of reactions that would otherwise happen more slowly. The enzyme is not altered by the reaction. You have hundreds of different enzymes in each of your cells. Each of these enzymes is responsible for one particular reaction that occurs in the cell. In this lab, I am studying an enzyme that is found in the cells of many living tissues. The name of the enzyme is catalase; it speeds up a reaction, which breaks down hydrogen peroxide, a toxic chemical, into two harmless substances--water and oxygen. The reaction is as follows: 2H2O2 ----> 2H2O + O2 therefore there are enzymes in liver too
How do you convert Silver oxide back to silver?
To properly dispose of Silver Oxide :• Add 100 volumes of distilled water to 1 volume Silver Oxide powder. (glass container only)• Add common household Hydrogen Peroxide, very slowly, with lots of stirring. (glass or plastic stirrer only)• Add Hydrogen Peroxide, stirring, until all of the Black Powder has turned gray. (lots of bubbles - Oxygen)• You now have reduced Silver Oxide into harmless Silver Powder. (You may want to keep it)• NOTE : Silver Powder also breaks down the Hydrogen Peroxide, forming Oxygen bubbles.
Why is the permanganate added slowly to the hydrogen peroxide solution?
To avoid a violent reaction.
Why is the permanganate solution added slowly to hydrogen peroxide solution?
To avoid a violent reaction.
Is hydrogen peroxide a heterogeneous or homogeneous mixture?
Hydrogen Peroxide (H2O2) is a compound, and liquid at room temperature. It is NOT a mixture. However, at room temeprature it slowly decomposes to oxygen and water. 2H2O2 = 2H2O + O2 It the oxygen remains in solution in water then it is heterogeneous solution, NOT Mixture.
What happen if the potassium permanganate solution drop to the water?
If potassium permanganate solution is dropped into water, it will dissolve and create a purple or pink solution. Potassium permanganate is a strong oxidizing agent and can be used for various applications such as disinfection and water treatment.
What is the charge of hydrogen peroxide?
As H2O2 it is uncharged , but rather unstable., and will slowly decompose to water and oxygen.
Why does hydrogen peroxide evaporates slower than alcohol?
Hydrogen peroxide has stronger intermolecular forces (hydrogen bonding) compared to alcohol, leading to stronger attractions between its molecules that require more energy to break apart and evaporate. This results in hydrogen peroxide evaporating more slowly than alcohol. Additionally, hydrogen peroxide has a higher molecular weight compared to most alcohols, contributing to its slower evaporation rate.
Can an apple break down hydrogen peroxide?
Yes it can. I did it in science class just today, and it works. It happens slowly but it does break down hydrogen peroxide.
Can any type of yeast be used for elephant toothpaste?
Hydrogen peroxide (H2O2) is always decomposing to release oxygen and water, but it does so slowly. In elephant toothpaste, the hydrogen peroxide is mixed with detergent and food color and then saturated iodide solution is added. The iodide acts as a catalyst so that the H2O2 breaks down really quickly. All the gas bubbles released makes the detergent bubble up suddenly.
What happens when oxygen is prepared from hydrogen peroxide without adding a catalyst?
Hydrogen peroxide purchased from a store or science supply house has been stabilized so that expected loss due to spontaneous decomposition into oxygen and water is less than 3% per year. Without adding a catalyst, you will have to wait a very long time to collect the oxygen from a sample of hydrogen peroxide.
Why should H Ac be added slowly to the milk with through stirring?
Adding hydrogen peroxide slowly and with stirring helps to ensure uniform distribution within the milk, which is important for achieving the desired antimicrobial effect. Slow addition also helps prevent localized high concentrations of hydrogen peroxide which could have negative effects on the milk's composition or quality.
What safety precautions should be taken when handling a mixture of hydrogen peroxide and sulfuric acid?
When handling a mixture of hydrogen peroxide and sulfuric acid, it is important to wear appropriate personal protective equipment such as gloves, goggles, and a lab coat. Work in a well-ventilated area to avoid inhaling any fumes. Keep the mixture away from heat sources and open flames as it can be reactive and potentially hazardous. Additionally, always add the hydrogen peroxide to the sulfuric acid slowly and carefully to prevent splashing or spattering.
Why color of potassium permanganate disappear slowly first but quite fast afterwards in titration?
The color of potassium permanganate disappears slowly at first because it is being consumed by the reaction with the analyte in small increments. Once most of the analyte has reacted, the color disappears faster because there are fewer molecules left to react with. This leads to a more rapid consumption of the remaining permanganate ions.
