Can hydrogen sulfide and copper sulfate undergo redox reactions

Because the sulfate ion is very stable, this ion is designed to occur under high temperature and high concentration conditions, and the redox redox reaction system contains hydrogen ions, hydrogen sulfide, sulfate ions, copper ions, and undissolved hydrogen sulfide and electrodes.

There is a class of reactions, i.e., the reaction of soft cations with soft anions, that cannot be explained by electrode potentials.

Another more typical example is the generation of AGI precipitation, AG(+) AG has an electrode potential, and the I2 I(-) electrode potential is, if you look at the electrode potential alone, AG(+) can easily oxidize I(-) to I2, but in fact AGI precipitation is generated. The reason is that their anions and cations are soft, soft and soft, and they are safe and sound. And between hard and hard, hard and soft, can be explained by the electrode potential.

Now just state what soft anions and anions are:

The so-called soft is that the ions are easy to deform, and the ions with low charge and many D electrons are soft cations, such as Cu (+) Ag (+) Hg (2+) and so on are all D10 structure, very soft; Cu(2+) is d9, which is also quite soft;

Among the anions, the ones with large radius and many negative charges are soft anions, such as S(2-), I(-)Se(2-), Te(2-), and P(3-) are all very soft anions.

Hydrogen sulfideReactive with copper sulfateChemical equations：cuso4+h2s=cus↓+h2so4。Strong.

Weak acid production is a metathesis reaction.

It's 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.

Copper sulphate is an inorganic compound with the chemical formula CuSO4. It is white or off-white powder. The aqueous solution is weakly acidic and appears blue.

Copper sulphate Properties:

Copper sulfate nucleus deficiency, inorganic compound, chemical formula CuSO4. It is white or off-white powder. The aqueous solution is weakly acidic and appears blue. However, when crystallized from an aqueous solution, blue copper sulfate pentahydrate is formed.

Also known as bile alum, this principle can be used to test the presence of water. It decomposes after losing crystal water after being heated, and is very stable at room temperature and pressure, does not deliquescent, and will gradually weathered in dry air.

The above content reference: Encyclopedia - copper sulfate noisy pants.

Summary. The reaction between copper sulfate solution and hydrogen sulfide is because the copper ions provided by copper sulfate and the sulfur ions provided by hydrogen sulfide aqueous solution combine to form copper sulfide, which is an insoluble substance, copper sulfide, and the reaction meets the conditions of metathesis reaction, so it is a metathesis reaction type.

Why copper sulphate can react with hydrogen sulfide.

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The reaction between copper sulfate solution and hydrogen sulfide is because the copper ions provided by copper sulfate and the sulfur ions provided by hydrogen sulfide aqueous solution combine to form copper sulfide, which is an insoluble substance, copper sulfide, and the reaction meets the conditions of metathesis reaction, so it is a metathesis reaction type.

Is it there? I'm glad to answer this chemistry question for you, and I hope it can help you <>

What's the matter with weak acids making strong acids.

This does not need to consider the weak acid to make strong acid, but to respect the experimental facts, this experiment is easy to see the formation of copper sulfide precipitation, meet the metathesis reaction conditions, but also respect the objective facts of the chemical reaction.

It is an objective fact that the generated copper sulfide is too insoluble and insoluble in the sulfuric acid generated, and such an equation can also be regarded as a special case that does not conform to the strong acid to the weak acid. Chemical reactions should be based on objective facts.

Sulfur and concentrated sulfuric acid react why sulfur dioxide is not marked with gas symbols.

S+2H2SO4 (concentrated) 3SO2 +2H2O

I don't know if you see the gas symbol in **.

The reaction equation of copper oxide and dilute sulfuric acid is: Cuo H2SO4 CuSO4 H2O.

Reaction phenomenon: The black copper oxide solid dissolves, and the resulting solution appears blue.

The reaction of copper oxide and dilute sulfuric acid belongs to the reaction of acid and metal oxide, which belongs to the metathesis reaction in the basic reaction. The metathesis reaction is a reaction in which two compounds exchange components with each other to produce two other compounds. It can be abbreviated as ab+cd=ad+cb.

Copper oxide is mainly used.

1. It can be used as a catalyst for organic synthesis, as an analytical reagent (for nitrogen determination), an oxidant, a catalyst and a petroleum desulfurizer, and can also be used for the determination of carbon in organic compounds.

2. It is used as a colorant in glass, enamel and ceramic industries, an anti-zoning agent for paint, and a polishing agent for optical glass. It is used in the manufacture of dyes, organocatalyst supports, and copper compounds. It is also used in the rayon manufacturing industry and as a desulfurizer for grease.

It is used as a raw material for the manufacture of other copper salts, and is also a raw material for making artificial gemstones.

1. Reaction of copper oxide and dilute sulfuric acid.

The chemical equation for the reaction of copper oxide and dilute sulfuric acid is:

cuo+h2so4= cuso4+hso

The phenomenon is that the amount of black solid decreases, and the solution changes from colorless to blue.

Copper oxide can react with dilute sulfuric acid, CuO+H2SO4= CuSO4+H2O, which belongs to the metathesis reaction in the basic reaction.

【Operation】1 Put a small amount of black copper oxide powder in a test tube, then add an appropriate amount of dilute sulfuric acid, and heat it slightly on an alcohol lamp.

2 The black copper oxide gradually dissolves, and the solution turns from colorless to blue.

2. The ionic equation for the reaction of copper oxide with dilute sulfuric acid.

cuo+2h+= cu2+ +2h2o。

Copper sulfide reacts with sulfuric acid, but because the solubility product of copper sulfide is too small, it is difficult to dissolve in dilute sulfuric acid, so copper sulfide does not react with dilute sulfuric acid. Copper sulfide reacts with dilute nitric acid or concentrated sulfuric acid.

Copper sulfide is an inorganic compound, the chemical formula is Cus or CuI2Cuii(S2)S, so in fact, two-thirds of the sulfur is persulfide ions, two-thirds of the copper is cuprous ions, black-brown, extremely insoluble, one of the most insoluble substances, second only to silver sulfide, mercury sulfide, palladium sulfide and aplatin sulfide, etc., because its insolubility makes some seemingly impossible reactions can occur.

Hydrogen sulfideand copper sulfateChemical equationsAs follows:

Copper sulfate, an inorganic compound, chemical formula CuSO4. It is white or off-white powder. The aqueous solution is weakly acidic and appears blue. However, when crystallized from an aqueous solution, blue copper sulfate pentahydrate is formed.

Also known as bile alum, this principle can be used to test the presence of water. After losing crystal water after being heated, it decomposes, and is very stable at room temperature and pressure, without deliquescent, and will gradually weathered in dry air.

Main uses:

It is used in the synthesis of phosphors.

Manufacture of electric discharge, light conductor, photoelectric meter, etc. Organic synthesis of reducing agents.

It is used for metal refining, pesticides, medicine, and catalyst regeneration. General purpose reagents. Preparation of various sulfides.

It is used in the manufacture of inorganic sulfides and is also used in chemical analysis such as the identification of metal ions.

Summary. Hydrogen peroxide and dilute sulfuric acid react to produce water and oxygen.

Dear, I saw your question and am sorting out the answer, and I will reply within five minutes.

Hello, are you hail book said that hydrogen oxide and sulfuric acid reaction? There is no such thing as hydrogen peroxide and sulfur smiling copper. Please describe the problem clearly. Moreover, the reaction between hydrogen peroxide and sulfuric acid does not produce sulfur, but the combination of sulfuric acid and hydrogen peroxide produces peroxide monosulfuric acid.

The fifth question is written in the information-based ion equation, why is it sulfur element, not sulfur dioxide?

Hello, you sent it**, my side is in a fuzzy state, the platform has regulations, and the ** sent by users is in a fuzzy state because it involves privacy.

You can send the original question over, not in the form of **, and I will answer it again.

The answer is yes.

It is not sulfur dioxide, which requires concentrated sulfuric acid.

Then why can't it be that the sulfur of copper sulfide has changed from minus two to plus six to the sulfur of copper sulfate.

Copper sulfide is insoluble in dilute sulfuric acid.

Copper sulfide is dissolved in concentrated sulfuric acid.

Copper sulfide plus concentrated sulphuric acid produces sulphur dioxide and sulphur.

Got it, no. Ah this, I don't understand why, isn't it dilute sulfuric acid here, I mean that the process of copper disulfide to sulfuric acid is not written in the process of messing around, why can't it be minus two to positive six calendar hands, but the positive hexavalent sulfur of sulfuric acid to the positive hexavalent sulfate of copper sulfate.

Because copper sulfide is insoluble in dilute sulfuric acid.

I don't react at all.

Reaction phenomenon of copper hydroxide and dilute sulfuric acid: the blue flocculent precipitate gradually disappears, and the solution is blue.

The reaction equation is: H2SO4 + Cu(OH)2 = CuSO4 + 2H2O.

1. Copper hydroxide.

The molecular formula of copper hydroxide is Cu(OH)2, the dry powder is blue or crystalline, slightly toxic, used as an analytical reagent, and is also often used in medicine and pesticides. Copper hydroxide has a bactericidal effect, its bactericidal effect mainly depends on copper ions, copper ions are absorbed by germinated spores, when it reaches a certain concentration, it can kill spore cells, thus playing a bactericidal role, but this effect is limited to preventing spore germination, that is, only protective.

2. Precautions for the use of copper hydroxide.

1. Spray in a timely, uniform and comprehensive manner after dilution.

2. High temperature, high humidity and copper-sensitive crops should be used with caution, and it is forbidden to use fruit trees in the flowering or young fruit stage.

3. Avoid liquid medicine and waste liquid from flowing into fish ponds, rivers and other waters at will to avoid polluting the environment.

4. The medicine should be stored in the original packaging in a cool, dry place away from children, food, feed and fire sources.

3. Dilute sulfuric acid.

Dilute sulfuric acid refers to an aqueous solution of sulfuric acid with a solute mass fraction less than or equal to 70%. Because the sulfuric acid molecules in dilute sulfuric acid have been completely ionized, dilute sulfuric acid does not have the special chemical properties of concentrated sulfuric acid, such as strong oxidation, water absorption, and dehydration (commonly known as carbonization, that is, strong corrosiveness).

Fourth, the basic properties of dilute sulfuric acid.

The base dilute sulfuric acid makes the purple litmus red, because the dilute sulfuric acid is acidic, the acid can change the color of the litmus, and the colorless phenolphthalein remains unchanged.

It can also be used to remove rust because of its corrosiveness: Fe2O3 + 3H2SO4 = Fe2(SO4)3 + 3H2O