Can ferrous sulfate be blended by itself, and how does iron sulfate become ferrous sulfate

OK. Ferrous sulfate can be prepared by dissolving metallic iron in dilute sulfuric acid. The iron wire or iron filings are first treated with sodium hydroxide solution to remove the oil stain, washed with water, put into 15% 20% sulfuric acid solution, heated to dissolve it, until the undissolved residue is no longer dissolved.

The solution was filtered out and transferred to a flask, and acidified with sulfuric acid until Congo red was acidic. After cooling, the hydrogen sulfide reaches saturation, the cork is tightened, and it is allowed to stand for 2 to 3 days, and then the flask is heated on a water bath and filtered to remove carbon, carbide and sulfide precipitation. The filtrate is transferred to a futz distillation flask, and the solution is evaporated and concentrated to half of its original volume with the introduction of oxygen-free CO2.

The solution is allowed to stand in CO2 gas overnight, and the crystals of ferrous sulfate can be precipitated.

Laboratory method.

1. It can be directly prepared by reacting iron powder with dilute sulfuric acid. Fe + H2SO4 (rare) = H2 + FeSo4

2. It can be obtained by reacting copper sulfate solution with iron, and the reaction equation is: CuSO4 + Fe = FeSO4 + Cu (this reaction type is a displacement reaction).

It can be blended by itself, and in order to prevent the oxidation of ferrous sulfate after blending, iron nails can be added to the solution.

Yes, dilute sulfuric acid should be used to react with iron, and the acid should be excessively used to prevent the hydrolysis of ferrous sulfate.

Yes, take care to isolate oxygen!

Sulfuric acid plus iron is equal to ferrous sulfate.

Iron in iron sulfate is +3 valence, and iron in the product is +2 valence, the iron valency is reduced, and the iron is reduced, then with the military redox reaction law, there must be an element valence increased, and the reactant to the product, iron and oxidation valence decreased, other elements remain unchanged, no element valency increases, so the correct equation that does not meet the redox reaction law should be 4feso4 + 2h2so4 + o2 = 2fe2 (SO4) 3+2H2O, i.e., oxygen oxidizes FeSo4 to Fe2(SO4)3 in an acidic medium

Summary. 1. Methods to solve the dissolution of ferrous sulfate: 1

Heating: Heat ferrous sulfate, you can add an appropriate amount of water to promote dissolution during the heating process, when the temperature rises to about 50, ferrous sulfate can be dissolved. 2.

Use oxidants: The use of oxidants can promote the dissolution of ferrous sulfate, such as the use of hydrogen peroxide, sodium peroxide, magenta, etc., to dissolve ferrous sulfate. 3.

Add alkaline substances: The addition of alkaline substances (such as sodium hydroxide, sodium carbonate, potassium hydroxide, calcium hydroxide, etc.) can promote the dissolution of ferrous sulfate, so as to complete the dissolution. 2. Expansion and supplementation:

1.Addition of acidic substances: The addition of acidic substances (such as nitric acid, phosphoric acid, sulfuric acid, etc.) can promote the dissolution of ferrous sulfate, thereby completing the dissolution.

2.Changeover dissolution: Changeover dissolution is to change ferrous sulfate into ferrous sulfate, and then dissolve it in solution, which can effectively improve the solubility rate.

3.Add esters: The addition of esters (such as ethanol, dimethyl ether, acetone, ether, etc.) can promote the dissolution of ferrous sulfate, so as to complete the dissolution.

1. Methods to solve the dissolution of ferrous sulfate: 1Heating:

Heat ferrous sulfate, you can add an appropriate amount of water to promote dissolution during the heating process, and when the temperature rises to about 50, ferrous sulfate can be dissolved. 2.Oxidizing agent:

The use of oxidants can promote the dissolution of ferrous sulfate, such as hydrogen peroxide, sodium peroxide, magenta, etc., to dissolve ferrous sulfate. 3.Add alkaline:

The addition of alkaline substances (such as sodium hydroxide, sodium carbonate, potassium hydroxide, calcium hydroxide, etc.) can promote the dissolution of ferrous sulfate, thus completing the dissolution. 2. Expansion and supplementation: 1

Addition of acidic substances: The addition of acidic substances (such as nitric acid, phosphoric acid, sulfuric acid, etc.) can promote the dissolution of ferrous sulfate, thereby completing the dissolution. 2.

Changeover dissolution: Changeover dissolution is to change ferrous sulfate into ferrous sulfate, and then dissolve it in solution, which can effectively improve the solubility rate. 3.

Add esters: The addition of esters (such as ethanol, dimethyl ether, acetone, ether, etc.) can promote the dissolution of ferrous sulfate, so as to complete the dissolution. <>

If you add boiling water above 50 degrees, can ferrous phosphate dissolve?

In the absence of the absence.

Please reply, please reply.

Dear <> will be happy to answer for you. Boiling water above 50 degrees can dissolve ferrous phosphate, but after dissolving, the phenomenon of ** will occur, that is, ferrous phosphate crystals will precipitate out of the solution. When the temperature is higher, the ** phenomenon will be more obvious, and even generally reach the level of boiling, so that the solution solidifies into solid precipitates.

In addition, when the temperature is too high or the ferrous phosphate solution contains a large amount of chloride ions, it will also aggravate the ** phenomenon. <>

The reason for the deterioration of ferrous sulfate is because it itself has strong reducing properties, and it will react with the air after being placed in the air for a long time, hydrolyze in the air, and slowly oxidize to ferric sulfate or ferrous oxyoxysulfate to deteriorate iron, and its ferrous ion ferric will be slowly oxidized to ferric 3 (Fe3+). The color of ferrous sulfate heptahydrate will change from the initial pale green to yellowish-brown. After the product is oxidized to ferric iron, it dissolves the solution into a precipitate and suspended solids, and the solution will also have a yellow color.

After the deterioration of solid ferrous iron, it will also form a yellow lump, and the chemical properties will change after deterioration, and the effect will be greatly reduced. How to prevent ferrous sulfate from deteriorating?

The reason why ferrous sulfate deteriorates is because it reacts with oxygen in the air, so the first way to extend its shelf life is to store it dry, avoid too much contact with air, and stay away from oxidants. Generally, ferrous sulfate can extend the shelf life by about 1 month if it is stored properly. Ferrous sulphate that has been dried at high temperatures lasts much longer than ferrous sulphate that has not been dried.

The method of preventing the deterioration of ferrous iron: add iron powder (iron element) to ferrous sulfate or solution, because ferrous oxidation produces iron sulfate, but iron sulfate reacts with iron to obtain ferrous sulfate fe+2fe3+=3fe2+. For solid products, it is recommended to mix and use now, and it is not recommended to add water to dissolve and store for a long time.

Even if ferrous iron is unstable, it is easily oxidized by oxygen, so if it is not stored properly, it will indeed fail and become iron sulfate.

How to use ferrous sulfate:

1) Fruit and vegetable weeding and insect control: 10 grams of ferrous sulfate mixed with 4-5 kg of water, foliar spray. During the normal growing season, spray 1-2 times a month. Pest and disease prone period, once every 10-15 days, 2-3 times in a row.

2) Used as flower fertilizer: 10 grams of ferrous sulfate mixed with 7-9 kg of water, watering potting soil, about once every 20 days. Be careful not to overapply, excessive will cause seedling burning, please use the following methods to deal with:

If sprayed: Spray several times on the front and back of the leaf with water. If the roots are irrigated:

Fill the potting soil several times with clean water.

3) Injection method: Fruit trees can be used with a concentration of 1 dilution 000 times the solution) 10 ml of ferrous sulfate, insert the injection needle into the trunk, and then hang the bottle of infusion Zheng Na on the tree, let the tree slowly absorb, this method is effective quickly, and it can be effective after 3 days.

4) The direct application rate of iron fertilizer is easy to be converted into iron iron compound and fails, so ferrous sulfate as base fertilizer can be mixed with 10-20 times organic fertilizer and the application effect is good. Foliar spraying of aqueous iron sulfate solution is better than basal application. The safe dosage of ferrous sulphate is:

1.Overview of ferrous sulfate.

Ferrous sulfate is a commonly used chemical reagent with the chemical formula FeSO4 and molecular weight. It is a white or light green powdery substance, which is easy to absorb moisture and turn yellow in the air. Ferrous sulfate is widely used in industry, medicine, agriculture and other fields.

2.Preparation of ferrous sulfate.

There are many ways to prepare ferrous sulfate, among which the following two are more common:

Iron sulfate and sodium sulfite are reacted to give ferrous sulfate.

Reaction equation: FeSO4 + Na2SO3 FeSO4 + SO2 + Na2SO4

Ferrous sulfate is prepared from scrap iron.

Ferrous sulfate can be obtained by adding waste iron to a reaction kettle containing sulfuric acid and reacting at high temperature and pressure.

3.Applications of ferrous sulfate.

Ferrous sulfate can be used as an oxidizing agent, reducing agent, catalyst, etc. in industry. In medicine, ferrous sulfate can be used for the preparation of iron preparations, blood transfusion, and the prevention of iron-deficient anemia. In agriculture, ferrous sulfate can be used as fertilizer, reducing agent of glyphosate, fungicide, etc.

4.How to use ferrous sulfate and precautions.

The use of ferrous sulphate varies depending on the field of application. In the preparation of iron preparations, ferrous sulfate can be taken directly by mouth, but care should be taken with the dose. In agriculture, ferrous sulphate needs to be mixed with other fertilizers and should be avoided in excess, otherwise it can cause soil pollution.

In industry, ferrous sulfate needs to be used according to specific requirements.

5.Hazards and protection of ferrous sulfate.

Both the dust and solution of ferrous sulfate have toxic hazards to the human body and need to be protected. After exposure to ferrous sulfate, if you have symptoms such as difficulty breathing, dizziness, and nausea, you should seek medical attention in time. When handling ferrous sulfate, you should wear protective masks, gloves, glasses, etc.

6.Storage of ferrous sulfate.

The storage of ferrous sulfate requires the following attention:

Keep ferrous sulfate in a cool, dry, well-ventilated place.

Ferrous sulphate should be tightly packed to avoid moisture and moisture.

Ferrous sulfate needs to be stored separately from flammable and explosive materials.

The storage time of ferrous sulfate should not be too long, and the storage period stipulated by the state should be followed.

7.The environmental influence of ferrous sulfate is resounding.

The excessive use and misuse of ferrous sulfate can have a negative impact on the environment. Residues of ferrous sulfate can cause pollution to water bodies and cause harm to ecosystems. Therefore, when using ferrous sulfate, it is necessary to pay attention to the control of the amount used and avoid pollution to the environment.

8.Brief summary.

Ferrous sulfate is a commonly used chemical reagent, which is widely used in industry, medicine, agriculture and other fields. When using ferrous sulfate, it is necessary to pay attention to its hazards and protection, but also to pay attention to its storage and environmental impact.