Does copper rust? Please design an experimental proof.

Copper will rust, turning green is rust, the main ingredient is copper sulfate, highly toxic, you have copper at home, if you put a little water, after a period of time you can see that there is a part of the green substance at the water interface, that is, the copper is rusty, or you soak the copper wire in water, part of it is in the outside air, and it will rust after a long time.

If you put the copper in a humid environment, it will rust.

If it's a design experiment, just place a copper sheet in a beaker and let it be semi-submerged in water, and that's good (it won't be seen until a while).

Copper + water + carbon dioxide === basic copper carbonate (patina, patina).

Isn't there often patina on the unearthed ancient relics?

In the past, there was a Han tomb in Xuzhou that was stolen, and the gold and silver artifacts in the tomb were stolen, and as a result, a seal that could uncover the identity of the owner of the tomb, because it was too close to the bronze, it was dyed with a body of patina, and the tomb robber thought that the copper was worthless, so he did not steal it.

By the way, patina is not copper sulfate as "WDH1983457 - Assistant Level 2", but basic copper carbonate.

Copper sulfate, highly toxic"The statement is also not very accurate.

Copper sulphate is toxic, but not highly toxic! It is often used in pesticides, and if it is highly toxic, who will feel the feeling of eating the crops that have been sprayed with it.

The toxicity of copper sulfate is only due to the fact that copper ions are heavy metals, and the toxicity cannot reach the level of severe toxicity, but it is also toxic.

Of course it will rust, and my copper-framed eyes will become patina.

Patina, which is basic copper carbonate, is a reaction of copper and water and carbon dioxide!

There is patina that allows you to see that it will rust, and the composition is basic copper carbonate (Cu(OH)2CO3).It is highly toxic.

And experiment. It's a nuisance.

Patina, why can't it rust.

Belch. It's boring.

What was produced was basic copper carbonate Cu2(OH)2CO3, and he was wrong.

Copper reacts with substances such as oxygen, carbon dioxide, and water in the air, resulting in rust. Patina, commonly known as patina, is mainly composed of basic copper carbonate with the chemical formula Cu (OH) Co.

Heating in the air will decompose into copper oxide, water and carbon dioxide, adding sodium carbonate to a dilute copper sulfate solution, or passing carbon dioxide into a copper hydroxide suspension to obtain basic copper carbonate precipitation.

Basic copper carbonate can be regarded as composed of copper hydroxide and copper carbonate, and there are actually two kinds of copper hydroxide combined, one copper carbonate and copper hydroxide combined with two copper carbonates. The chemical formula of the former is Cuco ·Cu(OH), which is a grass-green monoclinic crystalline fibrous agglomerate, or dark green powder.

Copper rusts when there is oxygen, water and carbon dioxide, and copper rusts the fastest in salt water because of the formation of galvanic cells, which can greatly speed up the reaction rate, and patina is a light green fine particle or amorphous powder, which is the main component of copper in the air to form patina. This powder is toxic and unstable.

Copper in a humid environment and oxygen.

Carbon reaction, so, in the case of a lot of moist carbon dioxide, copper will be oxidized and rusted, and the conditions required for copper to rust are actually the result of the interaction of copper with: oxygen, water, and carbon dioxide.

The chemical equation for copper rust is: 2Cu + H2O + CO2 + O2 = Cu2 (OH) 2CO3

Patina, unlike rust, produces basic salts.

Humid, aerobic, is an environment where water and oxygen exist at the same time.