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Why is the permanganate solution added slowly to the hydrogen peroxide solution?
Wiki User
∙ 7y ago
To avoid a violent reaction.
Rubye Mante
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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.
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.
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
Why the reaction between hydrogen and chlorine is very slow at room temperature?
Because hydrogen molecule is very stable and it is because of high dissociation enthalpy of hydrogen molecule, it reacts slowly with chlorine at room temperature.
What are the solution to slow down global warming?
Cease all carbon emissions and the Earth will slowly heal itself.
Why is the permanganate solution added slowly to hydrogen peroxide solution?
To avoid a violent reaction.
Why is the permanganate added slowly to the hydrogen peroxide solution?
To avoid a violent reaction.
What happen if the potassium permanganate solution drop to the water?
The permanganate dissolves slowly in water to form a purple solution.
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.
What happen when potassium permanganate is added to butter?
it will get fire slowly
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.
Is 2H2O O2 synthetic or degradative reaction?
An example of spontaneous decomposition is that of hydrogen peroxide, which will slowly decompose into water and oxygen: : 2H2O2 → 2H2O + O2 thus it would be a degradative reaction
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.
Why is it essential for magnesium chloride solution in the crucible to be heated slowly?
If the solution is not heated slowly, the solution could boil over resulting in lost mass and calculation errors
What is the product of hydrogen peroxide and manganese dioxide?
Manganese dioxide will catalyze the release of oxygen when added to hydrogen peroxide. The peroxide, H2O2, becomes H2O + O. The oxygen escapes as a gas, leaving water. The manganese dioxide remains unchanged. Concentrated hydrogen peroxide reacts very rapidly, even violently, when MnO2 is added; but a dilute solution will release its oxygen more slowly and steadily; making it useful as an oxygen generator for laboratory experiments.
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.
What can you mix together to make a chemical reaction besides vinegar and baking soda?
Potassium chlorate and and jelly babies will produce a very violent flame. Obviously this should not be done at home. Some reactions that can be done safely with household materials include (might not be as exciting though): 5 parts vinegar and 1 part milk of magnesia: The milk of magnesia will make the mixture milky white at first before it slowly clears up and gets noticeably warmer. Epsom salt and washing soda: Make a clear solution of each and then mix them. The solution will turn cloudy. Add some vinegar and it will turn clear again. More vinegar will make it fizz. Hydrogen peroxide and liver: A small piece of liver in hydrogen peroxide will produce bubbles of oxygen.
