What is the chemical equation for the reaction of sulfuric acid and copper?

The chemical equation for the reaction of concentrated sulfuric acid and copper is: Cu + 2H2SO4 (concentrated) = CuSO4 + 2H2O + SO2. The phenomenon is that the copper gradually dissolves, bubbles are formed, and the gas produced can make the purple litmus turn red or the magenta solution fade, and the solution is diluted blue after cooling.

Concentrated sulfuric acid has strong oxidizing properties, which can oxidize the inactive metal copper. In this reaction, the valency of copper increases from 0 to +2, and it is oxidized by concentrated sulfuric acid, so concentrated sulfuric acid is used as an oxidant and copper is used as a reducing agent.

The phenomenon of the reaction of sulfuric acid and copper:The reaction phenomenon between copper and concentrated sulfuric acid is that bubbles will be formed, and the copper will be gradually dissolved, and the reaction solution will be diluted after cooling, and the solution will be blue. The gas produced by the reaction of copper with concentrated sulfuric acid can redden, or fade the magenta solution.

If there is an excess of concentrated sulfuric acid in the reaction, the surface of the copper will first turn black, forming a black turbidity, and then a white solution. After the copper has completely reacted, a grayish-white substance will settle at the bottom of the tube.

Copper and sulfuric acid reactionChemical equationsCu 2H2SO4 ==CuSO4 SO2 +2H2O; 5cu＋4h2so4=cu2s↓＋3cuso4＋4h2o；cu2s＋2h2so4＝cus↓＋cuso4＋2h2o＋so2↑；cus＋4h2so4＝cuso4＋4so2↑+4h2o。

Actually and concentrated sulfuric acid.

The reaction process is very complex.

Foreign chemists pointed out that the most common reaction product of copper and concentrated sulfuric acid is copper sulfate.

and cuprous sulfide.

After 80, with the increase of temperature, the formation of copper sulfate in the reaction gradually increases, while the formation of cuprous sulfide gradually decreases, and when it reaches 270, cuprous sulfide completely disappears in the reaction. Reaction Cu 2H2SO4 = CuSO4 SO2 + 2H2O.

It is dominant at all temperatures, and above 270 it is the only reaction. The other reaction is 5cu 4h2SO4 = Cu2S 3CuSO4 4H2O.

The following must be taken care of when using copper sulfate:

1) The toxicity of copper sulfate is proportional to the water temperature, so it should generally be used in the morning on a sunny day, and the dosage should be reduced according to the water temperature.

2) The dosage of copper sulfate is proportional to the water fertility, organic matter and suspended solids content, salinity and pH value, so the appropriate dosage should be selected according to the specific situation of the pond in the process of use.

3) When the water body is alkaline, use copper sulfate with caution to avoid the formation of copper oxide.

Poisoning fish. 4) The safe concentration range of copper sulfate for fish and other aquatic animals is small and toxic (especially for fish fry), so the dosage should be accurately calculated when used.

The above content reference: Encyclopedia Sulfuric Acid.

The above content reference: Encyclopedia Copper.

The reaction of sulfuric acid with copper (Cu) can be expressed as the following chemical equation:

Cu + H2SO4 CuSO4 + H2 In this reaction, copper is displaced with sulfuric acid to form copper sulphate (CuSO4) and water (H2O). It is important to note that copper sulphate is a colorless crystalline solid, not a blue one. The blue copper salt is copper sulfate pentahydrate (CuSO4·5H2O).

The copper ions (Cu2+) in the copper sulfate solution are blue due to the D-D transition of electrons in the d orbital around the copper ions. In copper sulfate pentahydrate, the water molecule coordinates with the copper ion to form a blue hydrated ion ([Cu(H2O)6]2+).

cu + h2so4 → cuso4 + h2↑

In this reaction, copper (Cu) undergoes a chemical reaction with sulfuric acid (H2SO4) to produce copper sulfate (CuSO4) and hydrogen (H2) gases. This is a single substitution reaction in which copper replaces the hydrogen atoms in the sulfuric acid to form copper sulfate, and hydrogen gas is released.

The chemical equation for the reaction of concentrated sulfuric acid and copper is: Cu + 2H2SO4 (concentrated) = CuSO4 + 2H2O + SO2.

Phenomenon: Copper gradually dissolves, bubbles are formed, the solution turns blue, copper is gradually dissolved, bubbles are generated, and the gas produced can make the purple litmus turn red or the magenta solution fade, and the solution is diluted blue after cooling. The reaction equation is Cu + 2H2SO4 (concentrated) = Heating = CuSO4 + SO2 + 2H2O, and the side reaction is 5Cu + 4H2SO4 (concentrated) = Heating = 3CuSO4 + Cu2S + 4H2O, etc.

The main role of sulfuric acid:

For the production of agricultural production: the production of ammonium sulfate (commonly known as ammonium sulfate or fertilizer powder) and superphosphate (commonly known as superphosphate lime or general calcium) for the production of fertilizers, both of which consume a large amount of sulfuric acid. 2NH3 + H2SO4 = (NH4)2SO4 is used in the production of pesticides, many pesticides should be used as raw materials for sulfuric acid, such as copper sulfate and zinc sulfate, which can be used as fungicides for plants, thallium sulfate can be used as rodenticides, ferrous sulfate and copper sulfate can be used as herbicides.

Role in consolidating national defense: The development of the sulfuric acid industry in some countries was once closely linked to the production of military explosives. The relationship with the atomic energy industry and rocket technology, the production of nuclear fuel for atomic reactors, the preparation of alloys such as titanium and aluminum for reactors, and the titanium alloys used in the manufacture of rockets, supersonic jets and artificial satellites, are all directly or indirectly related to sulfuric acid.

The above content reference: Encyclopedia Sulfuric Acid.

cuso4+h2s=cus↓+h2so4。

Hydrogen sulfide. When dissolved in water, it is sulfide ions and copper sulfate.

The chemical equation for the reaction of hydrogen sulfide and copper sulfate is CuSO4+H2S=Cus +H2SO4. Strong.

Weak acid production is a metathesis reaction.

Bending width is just a special case. This reaction results in copper sulfide solids that are insoluble in sulfuric acid. Hydrogen sulfide is a flammable acid gas under standard conditions, colorless, with the smell of rotten eggs at low concentrations and sulfur at very low concentrations.

Physical properties of hydrogen sulfide

Molecular structure: the central atom S atom adopts sp heterobundal (the actual result calculated according to the bond angle is close to p hybridization), the electron pair configuration is regular tetrahedral shape, the molecular configuration is v-shaped, the h—s—h bond angle is, and the dipole moment.

d is a polar molecule.

Due to the weak H—S bond energy, about 300 hydrogen sulfide decomposes.

Ignition point: 260, saturation vapor pressure: , solubility: soluble in water (dissolved in ethanol, carbon disulfide.

Glycerin, gasoline, kerosene, etc. Critical Temperature:,Critical Pressure:.

The above content refers to Encyclopedia - Hydrogen sulfide.

Reaction chemical equation for copper and concentrated sulfuric acid:

Cu 2H2SO4 (concentrated) CuSO4 SO2 2H2O Phenomenon: Copper is gradually dissolved, bubbles are formed, and the gas produced can make purple litmus turn red or the red solution fade. The solution is diluted blue after cooling.

[Chemistry] compulsory 1 - the reaction of concentrated sulfuric acid with copper.

The reaction equation of copper and dilute sulfuric acid is: Cu+2H2SO4==CuSO4+SO2 +2H2O.

Copper and sulphuric acid react to produce: copper sulphate, sulphur dioxide, and water. cu+2h2so4==cuso4+so2↑+2h2o。

What wrong manipulations will make a test tube**:

1) The iron clamp holding the test tube is too tight, leaving no room for the test tube to be heated and expanded, so that the test tube will explode due to heated expansion.

2) There is water on the outer wall of the test tube that has not been wiped dry. When heated, the outer wall of the test tube is dried in some places first, and some places are dried later, which causes the test tube to burst due to uneven heating.

3) When heating the solid drug in the test tube, the mouth of the test tube is not slightly inclined to the width of the nucleus, and the water flows from the mouth of the test tube to the bottom of the test tube due to the formation of water in the reaction process or the fact that the original solid drug contains wet stored water, causing the test tube to burst.

4) When heating the liquid in the test tube, the liquid in the test tube exceeds one-third of the volume of the test tube, and the liquid escapes from the test tube and spills on the outer wall of the test tube during the heating process, causing the test tube to burst.

5) When heating the test tube, the whole test tube is not evenly heated first, but directly heats the test tube where the drug is placed in the test tube, which causes the test tube to burst.

6) When heating the test tube, the flame core of the alcohol lamp comes into contact with the test tube, causing the test tube to burst.

7) Placing a hot test tube on a table or test tube rack causes the test tube to burst.

8) During the experiment, there is a cold liquid splashed on the heated test tube or the hot test tube has not been cooled, if it is washed with cold water, it is likely to burst.

9) When the gas is collected, the gas is collected by the drainage method, and when the gas is collected, the air duct is not taken out of the water tank, so that the alcohol lamp is removed first, so that the cold water enters the test tube along the air duct, which will cause the test tube to burst.

Cu + 2H2SO4 (concentrated) = CuSO4 + SO2 + 2H2O (heating condition).

Concentrated sulfuric acid has strong oxidizing properties, and under heating conditions, it can undergo redox reaction with most metals, and itself is reduced to sulfur dioxide gas.

The equation for the chemical reaction of copper and concentrated sulfuric acid is as follows:Cu + 2H2SO4 (concentrated) = CuSO4 + SO2 + 2H2O (Condition: Heated).

The ionic reaction equation for copper and concentrated sulfuric acid is given belowCu + 2H2SO4 (concentrated) = Cu2+ +SO42- +SO2 + 2H2O (Condition: Heated).

Copper and concentrated sulfuric acid do not react!

The periodic table also shows that copper is behind hydrogen and is inactive and cannot be replaced!!

It can react with concentrated sulfuric acid: zinc, iron, tin, lead!