Rust What is the process of rust formation?

Iron is exposed to the air, and if there is moisture, it will oxidize into iron oxide (Fe2O3) and ferrous oxide (FeO), and the mixture of iron oxide and ferrous oxide is called ferric oxide, which is rust.

Other metals will rust too, I don't know.

Iron is exposed to the air, and if there is moisture, it will oxidize to iron oxide and ferrous oxide, and the mixture of iron oxide and ferrous oxide is called ferric oxide, which is rust.

Other metals can also rust.

Iron is a mixture of iron oxide, ferric tetroxide, ferrous oxide (Fe2O3, FeO, Fe3O4) that produces iron oxide under the action of air and water.

It seems to be something I learned in high school chemistry, and I can't write chemical reaction equations.

Iron is exposed to the air and oxidizes to iron oxide (i.e. rust) if moisture is present.

Oxidation, and then there's the electrochemical reaction.

It is oxidized to ferric tetroxide

2fe+o₂+2h₂o==2fe（oh）₂

4fe（oh）₂+o₂+2h₂o===4fe（oh）₃

2fe（oh）₃=fe₂o₃+3h₂o

Rusting is a chemical reaction, essentially an oxidation reaction of metals.

The most common phenomenon of rust is that iron products are oxidized by long-term exposure to air and oxygen, or are eroded by oxygen in water to become oxides.

The conditions required for iron to rust are as follows:

1. The active chemical properties of iron itself.

2. Oxygen contained in the air under external conditions.

3. Moisture is one of the substances that makes iron easy to rust.

In summary, only when the oxygen in the air is dissolved in the water, the oxygen reacts with iron in the watery environment to form iron oxide, which is rust. Rust is a brownish-red substance, it is not as hard as iron, it is easy to fall off, and the volume of a piece of iron will swell 8 times after it is completely rusted.

In the presence of impurities carbon, the iron metal reacts with moisture and oxygen in the environment, and the iron metal lead cover will rust. It is generally used in paint, ink, rubber and other industries, and can be used as a catalyst, a polishing agent for glass, gemstones, and metals, and can be used as a raw material for ironmaking. The largest application of iron oxide is as a pigment.

Rust is an oxide of iron, which is formed when iron is oxidized with water dissolved. This means that if there is no water vapour in the air, or if there is no water at all, or if there is no dissolved oxygen in the water, rust will not form.

In the humid air, a thin film of water is adsorbed on the surface of the steel, which contains a small amount of H+ and OH-, and also dissolves oxygen, resulting in the formation of a layer of electrolyte solution on the surface of the steel, which together with the iron in the steel and a small amount of carbon (because the steel is impure) just to form countless tiny galvanic cells. In these galvanic batteries, iron is the negative electrode and carbon is the positive electrode. Iron loses electrons and is oxidized.

Rust can be removed with an acidic substance, but rust on clothing in general is removed with a weakly acidic substance.

The meaning of rust is as follows: front

1. Basic Meaning.

1. xiù , shape sound. The word is from Jin Congsu. "Su" means "thousands of needles and holes".

The combination of "gold" and "su" means that "the surface of the metal is pierced with thousands of needles and holes like a cloth in embroidery". Original meaning: The metal surface seems to have been pierced with thousands of needles, from dense and smooth to dense pinholes.

2. Oxides generated on the surface of metals. Iron. Copper. Spot.

3. Rust. Erode. Locked.

Second, the detailed meaning of the word Xun.

1. Substances formed by oxidation of metal surfaces such as copper and iron in humid air. Rust, rust, patina.

2. Rust of metal. Rust, blades are rusty, door locks are rusty.

3. A disease of plants, rust-colored spots appear on stems and leaves due to fungal infection. Rust, rust inhibitors.

3. Chemical terms.

Chinese: rust. English: rust. Formula: Fe2 O3. Rust is a chemical compound. When iron is left wet for a long time, it forms a compound called rust with oxygen.

Fourth, the introduction. Only when the oxygen in the air is dissolved in the water, the oxygen reacts with the iron in the watery environment to form something called iron oxide, which is rust. Rust is a brownish-red substance, it is not as hard as iron, it can easily fall off, and after a piece of iron is completely rusted, the volume can expand by 8 times.

Rust means that the metal blade is corroded by rust.

Rust is a Chinese word that refers to the absence and change of physical difference in the volume and chemical properties of a substance through the action of foreign substances.

The word rust was first used in Chapter 14 of Biye's Spring Without Flowers.