What are the basic properties of oxides ?
from the curriculum of chemistry for each of us it is known that oxides - it is a complex chemical substances, which are compounds of relatively simple elements with a gas such as oxygen.There are salt-forming oxides and oxides which do not form salts.First, in turn divided into three further categories: acidic, basic and amphoteric.Let's look at the chemical properties of oxides.Basic oxides
Such type complex oxides are chemicals which are able to form salts when reacted with acids or oxides, but does not react and basic oxides or bases.For example, the main ones being the following oxides: potassium oxide, calcium oxide, ferrous oxide.
Now, let's show some examples of properties of the base oxide.
1. Reaction with water.Unreacted in H2O, the main oxide forms a lye.For example, lime quench the reaction.CaO + H2O = Ca (OH) 2.
2. Reaction with acids.When interacting with acids, water and salts are formed, for example CaO + H2SO4 = CaSO4 + H2O.
3. Reaction with acid oxides.The interaction is not formed with oxides other than acid as salt.For example, CaO + CO2 = CaCO3 - a formula of chalk formation.Acidic oxides
That is called complex chemicals that are oxides and reacting with basic oxides or bases to form salts.As an example, carbon dioxide CO2, sulfur trioxide SO3.Properties following oxides:
-kislotnye oxides can react with water.For example, in this way it forms carbonic acid CO2 + H2O = H2CO3.
- with alkalis or bases.An example would be the following reaction CO2 + NaOH = Na2CO3.As a result, should get nothing but soda or washing soda.It is an excellent tool for removing dirt and grease from the pan surface.Also with the help of this tool, some housewives remove burnt areas.
-vstuplenie react with basic oxides.Example - CO2 + MgO = MgCO3, obtaining magnesium carbonate.
These oxides are called complex chemical substances that can also be attributed to the oxides formed is not nothing like the salt in the process of a chemical reaction with acids or bases.More often than we used to use the term "amphoteric", referring to the metals.In part this is correct, because in this case, the oxides are called amphoteric because it reacts with metals.
An example of an amphoteric oxide can be reduced ZnO zinc oxide, which is widely used in medicine or aluminum oxide Al2O3.
Basic properties of oxides, reactive metals, are that they have an opportunity to react with not only acids but also with bases.
As an example for certain interactions can lead oxide amphoteric oxide with the oxygen that will result ZnO + H2CO3 = ZnCO3 + H2O.
same way and obtained a double salt of sodium and zinc.These reactions usually occur with high energy release.
In order to understand what it looks like this or that reaction, few of description, it is your responsibility to do it in the lab.