Chemistry What is the chemical equation for the reaction of making and collecting a bottle of purer

Potassium is slowly oxidized in the air to mainly produce potassium oxide K2O, equation:

4k+o2=2k2o

Potassium ignites in oxygen:

2K+O2=Ignition=K2O2 (potassium peroxide, not too much oxygen) K+O2=Ignition=Ko2 (potassium superoxide, oxygen is abundant).

2kmNO4====K2MNO4+MNO2+O2 In the laboratory, the method of heating potassium permanganate is often used to produce oxygen. The experimental procedure is:

1) After checking the air tightness, fill the test tube with a small amount of potassium permanganate, put a ball of cotton at the mouth of the test tube, and plug the nozzle with a plug with a catheter. Fix the mouth of the test tube slightly downward and fix it on the iron frame.

2) Fill each of the two gas collection cylinders with water and cover the mouth of the bottle with a glass sheet. Then place the bottle filled with water upside down in the sink with the glass pieces.

3) Heat the tube. Move the alcohol lamp flame back and forth under the test tube to evenly heat the test tube, and then heat the area where the potassium permanganate is located.

4) When air bubbles begin to be released from the catheter mouth, it is not advisable to collect them immediately, and when the air bubbles are released continuously and relatively evenly, then extend the catheter mouth into the gas collection cylinder filled with water. When the water in the bottle is drained, cover the mouth of the bottle with a glass sheet under the surface of the water. Carefully remove the bottle from the sink and place it on the table.

Collect another vial of oxygen in the same way.

5) When the heating is stopped, first remove the catheter from the water and then extinguish the alcohol.

Chemical equationsYes: 2kmNO4 = heating = k2mno4 + mno2 + o2.

Potassium permanganate. A decomposition reaction occurs, and the valency occurs.

There is a change and it is a redox reaction.

Oxidation-reduction reaction is a type of reaction in which the oxidation number of an element changes before and after a chemical reaction. The essence of a redox reaction is the acquisition and loss of electrons or the shift of shared electrons or pairs.

Potassium permanganate.

Potassium permanganate (potassium permanganate) is a strong oxidant, the chemical formula is KMNO4, black-purple crystals, with blue metallic luster, odorless, in contact with some organic matter or easy oxides, easy to occur**, soluble in water, lye, slightly soluble in methanol.

Acetone, sulfuric acid. In chemical production, it is widely used as an oxidizing agent.

Potassium permanganate has strong oxidizing properties, and is commonly used as an oxidant in the laboratory and industry, and in case of ethanol.

i.e. decomposition. It slowly decomposes into manganese dioxide in acidic media.

Potassium salts and oxygen. Light has a catalytic effect on this decomposition, so it is often stored in brown bottles in the laboratory. As can be seen from the elemental potential diagram and the oxidation state diagram of the free energy, it is extremely oxidizing.

The above content reference:Encyclopedia – Potassium permanganate

The chemical equation for potassium permanganate to oxygen is: 2kmno = k mno + mno + o.

Potassium permanganate is a dark purple solid that decomposes oxygen when heated, along with potassium manganate and manganese dioxide.

In addition to the method of heating potassium permanganate to produce oxygen, the method of decomposing hydrogen peroxide is often used in the laboratory to produce oxygen, and the literal expression of the reaction is: hydrogen peroxide (manganese dioxide) water + oxygen.

Heat potassium permanganate.

Chemical equation for the production of oxygen:

2kmNO4==K2MNO4+MNO2+O2 (Reaction conditions: heating) Potassium permanganate to produce oxygen method: instrument: alcohol lamp, test tube, iron frame, catheter, gas collection cylinder, sink, etc.

Collection method: drainage gas collection method (reason: oxygen is not easily soluble in water and does not react with water), and upward air exhaust method can also be used (because oxygen is slightly denser than air and does not react with air).

Heating potassium permanganate to produce oxygen step.

The chemical equation for the preparation of oxygen from potassium permanganate in the laboratory: 2kmn04 = heating = k2mno4 + mno2 + o2. Literal expression for the preparation of oxygen from potassium permanganate: potassium permanganate (heating).

Potassium manganate + manganese oxide + oxygen. Potassium permanganate is one of the strongest oxidizing agents - as an oxidant affected by the ph shadow slag coarse sound very much, in.

Acidic solutions have the strongest oxidizing capacity. Its corresponding acids permanganate HMN04 and anhydride Mn207 are strong oxidants and can be self-sufficient.

Kinetic decomposition heat, contact with organic matter causes combustion.

The prepared oxygen contains a small amount of Cl and a trace amount of C10Z; The anti-head should actually be an exothermic reaction, not an endothermic reaction.

, the above 1mo1 reaction occurs, and the heat is 108kJ

2KC103==2KC1+302 (MN02 catalytic heating).

Chemical equation for potassium permanganate to oxygen :

2kmno = k mno +mno +o In the experiment of producing oxygen from potassium permanganate, it is necessary to heat for a period of time to collect oxygen (mainly due to the activation energy), so it is essential to "heat" this reaction condition when writing the equation.

Potassium permanganate can produce oxygen.

3k2mno4 + 2co2 = 2kmno4 + mno2 +2k2co3

First prepare potassium permanganate in the imitation nucleus.

2kmno4 = k2mno4 + mno2 + o2↑2k2mno4 = 2k2o + 2mno2 + o2↑

The chemical formula for the preparation of oxygen from potassium orthomanganate with high locust number is: 2kmn4 = heat of adding lead = k2mno4 + mno2 + o2 (reaction conditions: two horizontal lines are drawn below heating, and the relative atomic mass is potassium k:

39, manganese mn: 55, oxygen O: 16).

2kmno = k mno +mno +o In the experiment of producing oxygen from potassium permanganate, it is necessary to heat for a period of time to collect oxygen (mainly due to the activation energy), so it is essential to "heat" this reaction condition when writing the equation.