Can oxygen distinguish between carbon monoxide and carbon dioxide?

Oxygen can be used to distinguish between carbon monoxide and carbon dioxide.

1. Design an experimental device so that two gases are ignited in oxygen, and carbon monoxide is the one that can be burned, and carbon dioxide that cannot be burned.

In fact, you don't have to use oxygen, you can do this experiment in air.

2. The above operation is still a bit complicated, simpler and more effective, and the safer inspection method is to use clarified lime water.

When two gases are introduced into lime water, carbon dioxide is the gas that can make lime water turbid, and carbon monoxide is carbon monoxide that cannot make lime water turbid.

ca(oh)2+co2=caco3↓+h2o

3. Hot copper oxide can also be used. Carbon monoxide is the one that passes the gas through the hot copper oxide to turn the black powder (copper oxide) red, and carbon dioxide is the one that does not discolor the black powder.

Cuo + Co = Heating = Cu + CO2

4. To direct the gas to the sodium hydroxide solution, carbon monoxide is insoluble and carbon dioxide is almost completely dissolved.

2naoh+co2=na2co3+h2o

5. Lead the gas to the purple litmus solution, what makes the solution red is carbon dioxide, and what cannot make the solution red is carbon monoxide.

h2o+co2=h2co3

Would you like to order it??? Or honestly through heated copper oxide or something...

Comparison of the properties of oxygen and carbon dioxide.

When a mixture of carbon dioxide and carbon monoxide is passed through hot copper oxide (cuo+co = cu+co), the carbon monoxide reacts with the hot copper oxide to produce copper and carbon dioxide, and pure carbon dioxide is obtained.

Pass a mixture of carbon dioxide and carbon monoxide through a sodium hydroxide solution (clear lime water is suitable for testing carbon dioxide, but not for absorbing carbon dioxide because of its small solubility).

Carbon dioxide is absorbed by sodium hydroxide (2NaOH + CO = Na CO + HO) to obtain pure carbon monoxide.

It is also possible to remove Co:: by sodium hydroxide solution first

2naoh + co = na co + h o, and then through the concentrated sulfuric acid out of the water (physical change, no equation) through a sufficient amount of clear lime water through the sakura drain brigade effect is not good, because the lime water is a weak alkali, carbon dioxide is inherently less, it is difficult to react completely, through the strong alkali effect is better, but the water peak will be introduced to further remove water.

Calcium carbonate turbidity liquid becomes clear when carbon dioxide is introduced, producing calcium bicarbonate.

Identification method: put the extinguished match into the sealed gas cylinder, if the match is rekindled, it burns violently, emits white light, releases heat, and generates a gas that makes the clarified lime water turbid, that is, the bottle is oxygen.

The resulting gas is passed into the clarified lime water, which becomes turbid, proving that the gas is carbon dioxide.

Oxygen is chemically more reactive. With the exception of rare gases and less reactive metal elements such as gold, platinum, and silver, most of the elements can react with oxygen, and these reactions are called oxidation reactions, and the compounds produced by the reactions (composed of two elements, one of which is oxygen) are called oxides.

1. Stretch a wooden strip with sparks into the bottle, if the wooden strip rekindles, it proves that it is oxygen, and there is no obvious phenomenon to prove that it is CO2.

2. Inject clarified lime water into the bottle. If there is a white precipitate, it proves that it is CO2, and if there is no obvious phenomenon, it proves that it is O2.

3. Inject purple litmus into the bottle, if the test solution turns red, it proves to be CO2, and no obvious change proves that it is O2.

4. Insert a red-hot copper wire, if the copper wire turns black, it proves to be oxygen, and no obvious change proves that it is CO2.

Burning sticks of wood reach out to the mouth of the gas collection cylinder and pass through the scorching copper mesh; The gas-filled test tube was inverted into the NaOH solution, and the clear lime water was passed; There are many more, judging by their nature.

A spark-bearing stick of wood was inserted into the gas collection cylinder, and the oxygen bottle was rekindled.

A flaming stick of wood is inserted into the gas collection cylinder, and the strip extinguishes the bottle of carbon dioxide.

Add a certain amount of clarified lime water to each of the two bottles, **, and the bottle that becomes cloudy is carbon dioxide.

The gas is respectively passed into the clarified lime water, which can make the clarified lime water turbid is carbon dioxide;

Sticks with sparks are put into the gas collector cylinders, and it is oxygen that can rekindle the sticks.

Light a piece of firewood, put it in a gas collection cylinder, and if it goes out, it's carbon dioxide.

Bromothymol blue solution can be used to identify carbon dioxide and is analyzed as follows:

Bromothymol blue, also known as bromothymol blue. Abbreviated as BTB. Bromothymol blue is an acid-base indicator and adsorption indicator. It is often used as a respiration reagent for aquatic organisms in biological experiments;

Bromothyme streptocollop blue solution is an indicator, a lower concentration of carbon dioxide makes it turn from blue to green, and a higher concentration of carbon dioxide makes it turn from blue to green and then to yellow, according to the discoloration, it can be used for the detection of CO2 released by aerobic and anaerobic respiration.

The gas is passed into the clarified lime water, if the clarified lime water becomes turbid, the gas is carbon dioxide, and vice versa.

Entering the clarified lime water test solution, turbidity is carbon dioxide before reflux, the reaction equation is regret brother:

co2+ca(oh)2＝caco3↓+h2o

Carbon dioxide enters the clarified lime water and becomes turbid, because carbon dioxide reacts with lime water to form calcium carbonate precipitation.