What are the basic properties of oxides?
From the school chemistry program, each of us is known for certain that oxides are fairly complex chemicals that are compounds of fairly simple elements with a gas such as oxygen. There are salt-forming oxides and oxides that do not form salts. The first are divided in turn into three categories: acidic, basic and amphoteric. Let's look at the chemical properties of oxides.
These types of oxides include complex chemicals that are capable of forming salts when reacting with acids or oxides, but do not react with basic oxides or bases. For example, the main ones are the following oxides: potassium oxide, calcium oxide, ferric oxide.
Now, let's use the examples to look at the properties of the main oxide.
1. Reaction with water. Entering interaction in N2Oh, the basic oxide forms alkali. For example, a lime slaking reaction. CaO + H2O = Ca (OH)2.
2. Reaction with acids. Interacting with acids, water and salts are formed, for example, CaO + H2SO4= CaSO4+ H2O.
3. Reaction with acid oxides. When interacting with acid oxides, nothing else is formed as salt. For example, CaO + CO2= CaCO3- education formulachalk
This is the exact name of the complex chemical substances, which belong to oxides and, when interacting with basic oxides or bases, form salts. An example is carbon dioxide CO.2,sulfur trioxideSO3.The properties of the oxides are as follows:
-acid oxides can interact with water. For example, carbon dioxide CO is formed in this way.2+ H2O = h2CO3 .
- with alkalis or bases. An example would be the following reaction CO2+ NaOH = Na2CO3. The result should be nothing more than soda ash or soda. It is an excellent tool for removing dirt and grease from the surface of pots. Also with the help of this tool, some hostesses remove the burnt areas.
- reaction with basic oxides. Example - CO2+ MgO = MgCO3receiving magnesium carbonate.
Such oxides are called complex chemicals, which can also be attributed to oxides, forming nothing more than salts in the process of chemical reaction with acids or bases. Most often we are accustomed to use the word "amphoteric", speaking of metals.This is partly correct, because in this case the oxides are called amphoteric, because they react with metals.
As an example of amphoteric oxide, zinc oxide ZnO, which is widely used in medicine or aluminum oxide Al, can be given.2O3.
The main properties of oxides that react with metals are that they have the ability to react not only with acids, but also with bases.
As an example, it is possible to cite the interaction of amphoteric oxide with oxygen oxide, which will result in ZnO + H2CO3= ZnCO3+ H2O.
The double salt of zinc and sodium is obtained in the same way. Such reactions usually occur with an increased release of energy.