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No. There are the following methods for the preparation of hydrogen peroxide:
1. The production of quinone-containing air electrodes for alkaline hydrogen peroxide is characterized by the fact that each pair of electrodes is composed of an anode plate, a plastic mesh, a cationic diaphragm and a quinone-containing air cathode, and the upper and lower ends of the electrode working area are provided with a distribution chamber for entering the fluid and a collection room for discharging the fluid, and a throttle hole is provided at the fluid inlet.
2. Neutralize the aqueous solution of sodium peroxide to pH9 0 9 7 with phosphoric acid or sodium dihydrogen phosphate, so that Na 2 Hpo 4 and H2 O 2 are generated, and the said Na 2 Hpo 4 and H2 O2 aqueous solution are cooled to 5 5, so that the vast majority of Na 2 Hpo 4 is precipitated in the form of Na 2 Hpo 4 · 10H 2 O hydrate, and then the mixture containing Na 2 Hpo 4 · 10H 2 O hydrate and oxygen peroxide aqueous solution is separated in the centrifugal separator, and the hydrate is separated After that, the aqueous solution of hydrogen peroxide containing a small amount of Na2HPo4 was evaporated and fractionated to obtain about 30 H2O2 product.
3. Electrolysis of 60% sulfuric acid to obtain perdisulfuric acid, and then hydrolysis can obtain hydrogen peroxide with a concentration of 95%. (This is a commonly used industrial method.) )
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It is feasible to generate hydrogen peroxide from water and oxygen.
Path 1: H2O+CO+O2->H2O2+CO2 catalyst: Ni-La-Al2O3 (La Ni ratio 1:15), Path 2: H2O-H2+ O2
h2 + o2 ->h2o2
Catalysts: Au SiO2, Au Fe2O3, Au-PD Fe2O3, Au-PD Al2O3
Path 3: H2O ->H2 + O2
aq + h2 ->ahq
ahq + o2 ->aq + h2o2
aq:anthraquinone
AHQ: Anthrahydroquinone catalyst: PT PD
Reference: Journal of Molecular Catalysis A: Chemical, 2004, 201, 1-2, 157
ohura,,,291,2005,215,applied catalysis a: general, chanchal samanta, 350,2008, 133
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No. In the industrial system, there is no water and oxygen production.
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The gibbs free energy of hydrogen peroxide to water reaction is less than 0, and vice versa is greater than 0, and the reaction equilibrium constant is too small.
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Hydrogen peroxideOxygenChemical equationsis 2H2oz (mNO2 catalyst) = 2H2O+O2. Hydrogen peroxide its molecule is composed of 2 hydrogen atoms and 2 oxygen atoms, and at room temperature Peikai can separate less oxygen, and manganese dioxide is added.
It can react violently and decompose a large amount of oxygen, which is commonly used in secondary school chemistry laboratories to produce oxygen. Hydrogen peroxide can decompose at room temperature to produce oxygen4 and water (slow decomposition), which can speed up the reaction after heating or adding a catalyst.
Hydrogen peroxide applications:
1.Hydrogen peroxide is usually prepared as an aqueous solution for hydrogen peroxide.
2.The use of hydrogen peroxide is divided into three types: medical, military and industrial, and the daily disinfection is medical hydrogen peroxide, which can kill intestinal pathogenic bacteria, pyogenic cocci and pathogenic yeast.
It is generally used for disinfection of object surfaces. Hydrogen peroxide has an oxidizing effect, but the concentration of medical hydrogen peroxide is equal to or less than 3%, wipe the wound surface, there will be a burning sensation, the surface is oxidized to white and bubbles, wash it with water, and return to the original skin color after 3-5 minutes.
3.It is used in the chemical industry to produce sodium perborate and sodium percarbonate.
Peracetic acid, sodium chlorite, thiourea peroxide.
and other raw materials, tartaric acid.
Oxidants of vitamins and the like. In the pharmaceutical industry, it is used as a fungicide, disinfectant, and an oxidant for the production of Fumei double insecticides and antibacterial agents. In the printing and dyeing industry, it is used as a bleaching agent for cotton fabrics to restore the hair color after dyeing.
It is used to remove iron and other heavy metals in the production of metal salts or other compounds. It is also used in electroplating solution to remove inorganic impurities and improve the quality of plated parts.
4.To deal with the peculiar smell of the kitchen drain, buy hydrogen peroxide at the pharmacy and pour water and laundry detergent into the drain to decontaminate, disinfect and sterilize; 3% hydrogen peroxide (medical grade) can be used to disinfect wounds.
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The products are glucose and oxygen. This reaction belongs to photosynthesis.
6co +6h o == chlorophyll ==c h o +6o
Photosynthesis generally refers to the process by which green plants (including algae) absorb light energy and synthesize carbon dioxide (CO2) and water (H2O) into energetic organic matter, while releasing oxygen.
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Oxygen and hydrogen react to form water in the case of ignition, hydrogen is stable at room temperature, and under the condition of ignition or heating, it can react with many substances, and the ignition of impure hydrogen will occur.
Hydrogen is the main industrial raw material, and it is also the most important industrial gas and special gas, which has a wide range of applications in petrochemical, electronic industry, metallurgical industry, food processing, float glass, fine organic synthesis, aerospace, etc. Nuclear research, deuterium nuclear accelerator bombardment particles, tracers, gas chromatography hydrogen flame testing raw materials, low-density probe balloons, new high-energy fuels, smelting metal tungsten, molybdenum, etc., as well as petroleum refining, float glass, electronics, food, drinking water, chemical production, aerospace, automobile industry and other industries.
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There is a substance in the compound degree that buries and asks water to generate oxygen, which is sodium peroxide, 2Na + 2H2O = 4NaOH + O2, and sodium peroxide is commonly known as an oxygen generator. Otherwise, it cannot react with water to produce oxygen. Sodium peroxide is one of the products of sodium combustion in oxygen or air, pure sodium peroxide is white, but the generally seen sodium peroxide is yellowish, because a small amount of sodium superoxide is produced during the reaction.
Sodium peroxide is an ionic compound, in which the oxygen element is -1 valence, and the sodium element is +1 valence, which can dissolve sodium peroxide in low-temperature sulfuric acid, and then distilled under reduced pressure to obtain hydrogen peroxide (H2O2):
Sodium peroxide reacts with water and acids to form sodium hydroxide and hydrogen peroxide (hydrogen peroxide decomposes into water and oxygen), and with carbon dioxide to form sodium carbonate and oxygen.
Sodium peroxide also oxidizes some metals. For example, molten sodium peroxide can oxidize iron to ferroate (FeO42-); It can decompose some acid-insoluble ores by eutectic ore.
In an alkaline environment, sodium peroxide can oxidize +3-valent arsenic (AS) to +5 valence and +3-valent chromium (Cr) to +6 valence in compounds. This reaction can be used to remove +3 chromium from certain rock minerals. It can also oxidize organic matter to ethanol and carbonate under general conditions, and can also react violently with sulfides and chlorides.
Sodium peroxide also has bleaching properties, because hydrogen peroxide (H2O2) will be generated during the reaction between sodium peroxide and water, because hydrogen peroxide has strong oxidation, some reagents such as magenta will be bleached, so sodium peroxide is put into phenolphthalein solution phenolphthalein first turns red and then fades, this process is irreversible.
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Question 1: What can react with water to produce oxygen Water electrolyzes itself to produce hydrogen and oxygen and peroxide such as sodium peroxide superoxide (KO2) to produce oxygen.
Question 2: Which elemental element reacts with water to form oxygen The oxygen in the water is 2 valence, and the oxygen generated is 0 valence, the valence of the oxygen element increases, and the single ruler that can oxidize 2 valence oxygen to 0 valence oxygen is only fluorine gas, and the reaction equation is: 2F2+2H2O=4HF+O2
Question 3: A married woman fell in love with me, and I fell in love with her. What am I going to do?
If she really thinks that you are more suitable than her husband to be her lifelong partner, and that she will be happier after divorce and remarrying you, and you are fully willing to accept him as your wife, (if you are also married, you also need to make inner judgments and choices like hers), the two tombs have thought it through. Then go through the formalities, sometimes the divorce procedures are more difficult, be patient.
Personally, I don't think it's a moral issue, and the issue shouldn't be moralized. A real person should be able to face his feelings truthfully, and if he is afraid or unable to face his true feelings, then what morality and responsibility are there to talk about. The responsibility of marriage lies in the common care of love, love is the foundation, when this foundation disappears, the responsibility can not be attached, for the sake of traditional views or face prudent oak problem to let two loveless people maintain the continuation of the marriage state against their will, is not only immoral, but also inhumane.
The feudal mentality from the beginning to this day is still stubbornly entrenched in the consciousness of many people, thinking that divorce and remarriage and other things are very bad, very dishonorable, and very immoral. I hope you can be brave enough to face your true feelings.
At the same time, it should be noted that love is not something that will not disappear once it is generated, and falling in love now does not mean that you will love each other in the future, the only thing you can do is to take care of this love together.
Whatever your final choice is, I hope you will have no regrets about your choice. Wishing you happiness.
ps: Some netizens above suggested that you find a psychological counselor, but in fact, I am.
Question 4: What can be combined with water to produce oxygen immediately It seems that there is not, but oxygen can be produced by ionizing water directly.
Question 5: What does water and air produce, can water and air produce oxygen, what does water and air produce, can water and air produce oxygen, and the compressed air can produce static electricity when it is transmitted through the pipeline and the friction between the pipe wall. The same goes for water. But the voltage is relatively small.
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OK. If you have a two-way choice when you graduate, one is to go to the army and the other is to go to the place. If you go to a place, you can go abroad. I have national defense students from Tsinghua University who have gone to the army, and some who have gone abroad. It's up to you to choose.
No, it must be cooked and drunk. In this way, the harmful substances in the soybeans can be removed, and the soybean milk will continue to cook for a few minutes after boiling, and it can be stirred with a spoon until it does not bubble after about 5 minutes. This stage can be done with a simmer. It's a small fire.