Sodium and copper sulfate reaction phenomenon, sodium and copper sulfate reaction

1.Why does sodium react with solvents?

Water has a greater concentration than copper ions.

2.Why is there a blue precipitate?

The resulting sodium hydroxide reacts with copper sulfate to form copper hydroxide.

3.Why does it turn in circles when reacting?

The resulting H2 loses sodium turns.

4.Why is there a popping sound?

The heat generated by the reaction makes the reaction between H2 and O2 have a popping sound.

Sodium is chemically very reactive and displaces hydrogen in water.

2na+2h2o=2naoh+h2↑

2NaOH+CuSO4=Cu(OH)2 +Na2SO4 So there is a blue precipitate, and the gas produced pushes the sodium to move, and the phenomenon of turning in a circle appears.

The heat generated causes the hydrogen to burn with a violent sound.

First of all, sodium reacts strongly with water, like throwing sodium directly into water.

When sodium reacts in water, the NaOH produced by it rapidly forms Cu(OH)2 precipitate with CuSO4, so that the blue solids can be seen to be produced and precipitated around the sodium particles. The blue color in the solution fades. Finally, it becomes a clear sodium sulfate solution and a blue precipitate of copper hydroxide.

Copper sulphate solution.

1 Na is very reactive and can displace H in H2O to produce H22 Displacement 2Na + 2H2O == 2NaOH + H2 metathesis 2NaOH + CuSO4 == Cu(OH)2 + Na2SO4

Cu(OH)2 blue precipitate is generated.

3 The reaction produces a large amount of heat and H2, water vapor, which pushes the NA to swim on the water surface.

4 Ibid., the gas expands by heat.

1) Naoh is very lively before the water reflects the sound field naoh

2) NaOH is then reflected with CuSO4 to generate Cu(OH)2 precipitate.

Sodium and copper sulfate reaction: first, sodium first reacts with water for redox reaction to generate sodium hydroxide, and then sodium hydroxide and copper sulfate undergo metathesis reaction to generate copper hydroxide and sodium sulfate.

1. The chemical equation for the reaction between sodium and copper sulfate.

When sodium reacts with copper sulfate solution, sodium first reacts with water as a redox reaction, oxidant H20, oxidized element Na, oxygen.

The chemical product Na0H generates Na0H and hydrogen.

The chemical equation of the reaction is: 2Na + 2H20 = 2Na0H + Hz.

Next, Na0H undergoes a metathesis reaction with copper sulfate.

The chemical equation of the reaction is: CuS04+2Na0H-Cu(OH)2 +Na2S04 to generate copper hydroxide and sodium sulfate.

The general equation for the reaction of sodium metal with copper sulfate solution is: 2Na+Cu2 ++2H20=2Na++Cu(OH)2 +Hz.

2. Reaction phenomenon between sodium and copper sulfate.

The phenomenon of chemical reaction between sodium metal and copper sulfate solution: sodium metal melts into bright balls, swims around on the water surface, makes a "hissing" sound, and colorless and odorless gas is generated, and at the same time, there is a blue flocculent precipitate in the reaction vessel.

3. Definition of chemical reactions.

A chemical reaction is the process by which a molecule breaks down into atoms and the atoms rearrange and combine to form new molecules. In the reaction, it is often accompanied by luminescence, heating, discoloration, precipitate, etc., and the basis for judging whether a reaction is a chemical reaction is whether the reaction generates new molecules. Nuclear reactions are not chemical reactions.

Sodium is first reacted with water for redox reaction, oxidant HO, oxidized element Na, oxidation product NaOH to generate NaOH and hydrogen.

The chemical equation of the reaction is: 2Na+2H O=2NaOH+H.

The ion reaction is: 2Na + 2H o 2Na + 2OH + H.

NaOH undergoes metathesis reaction with copper sulfate.

The chemical equation of the reaction is CuSO+2NaOH Cu(OH)NaSO, which produces copper hydroxide and sodium sulfate.

The ionic reaction is Cu +2OH = Cu(OH).

The total reaction was: 2Na+Cu +2H O=2Na+Cu(OH) H.

Main uses: 1. Industrial use.

It is used in the manufacture of other copper salts such as cuprous chloride, copper chloride, copper pyrophosphate, copper acetate, copper carbonate, etc. The dyes and pigments industry is used to manufacture copper-containing monoazo dyes such as reactive brilliant blue, reactive violet, etc.

2. Analytical reagents.

Copper sulphate is used in several chemical analyses. It is used in the detection of reducing sugars in the Filin reagent and Bannaria reagent. In the reaction, divalent copper ions are reduced to monovalent insoluble red precipitated cuprous oxide. Copper sulfate can also be used in biuret reagents for the detection of proteins.

Copper sulfate can be used to test for anemia. The blood sample is dropped into a copper sulfate solution, and if the blood sample contains enough hemoglobin, the blood sample will sink rapidly; If the hemoglobin level is insufficient, the blood sample will be suspended in solution.

In the flame color reaction, copper sulfate is blue-green, which is much bluer than the color of barium ions.

The above content refers to: Encyclopedia - Copper sulfate solution.

The above content reference: Encyclopedia - Sodium.

The experimental phenomenon is: there is a blue flocculent precipitate, if the sodium hydroxide solid is added, the experimental phenomenon is a blue flocculent precipitate, and then the blue precipitate becomes a black precipitate!

Reason: Sodium hydroxide reacts with copper sulfate to form sodium sulfate and copper hydroxide, copper hydroxide is blue, insoluble in water, and flocculent in water, so it is a blue flocculent precipitate; Solidification will produce blue flocculent precipitation, but the dissolution of sodium hydroxide solid releases a large amount of heat, so that the generated copper hydroxide is heated and decomposed, decomposed into copper oxide and water, copper oxide is black and insoluble, so the blue precipitation becomes black precipitation!

1. Sodium metal is put into copper sulfate solution, and first reacts with water to generate sodium hydroxide and hydrogen gas.

The phenomenon is: sodium floats on a solution of copper sulfate, melts into a small ball, swims rapidly on the surface of the water, and has a slight hissing sound.

2. After the collision, sodium hydroxide reacts with copper sulfate to generate copper hydroxide precipitation and sodium sulfate solution.

The phenomenon is: there is a blue flocculent precipitate.

Sodium is a metal element, located in the 3rd period, group ia in the periodic table, is a representative of alkali metal elements, soft texture, can react with water plum old to form sodium hydroxide, release hydrogen, chemical properties are more active. Copper sulfate is a white or off-white powder, and the aqueous solution is weakly acidic and blue. However, when crystallized from an aqueous solution, blue copper sulfate pentahydrate is formed.