WHy OXygen can react with metal?

In summary, the reactivity of oxygen with metal is due to the difference in electronegativity between the two elements. This creates a higher attraction between the metal and oxygen, causing the covalent bond between oxygen ions to break and form an ionic bond with the metal. Additionally, in solution, a thin aqueous film formed by humidity can aid in the oxidation of the metal, as seen in the example of iron being oxidized to Fe(OH)3. However, this effect does not work as well with copper, where a "passive film" is formed instead.
  • #1
no idea
93
0
WHy OXygen can react with metal?As i know , oxygen(O2) is bonded by covalent bond and it should be neutral charge. So how can the metal react with oxygen?
 
Chemistry news on Phys.org
  • #2
The difference of electronegativity between iron and oxygen is greater than the one between two oxygens. That means the attraction between iron and oxygen is higher. As a result, the covalent bond between the oxygen ions break and create an ionic bond with iron.
 
  • #3
Hello Miracles, you are right. However, there is one more thing; metal and molecular oxygen react in solution, that is, a very thin aqueous film formed by humidity on iron dissolves some of iron with the aid of molecular oxygen dissolved in that film. Iron has a greater stability in 3+ state, so eventually a significant amount of iron is oxidized to Fe(OH)3.

The same thing does not operate well in copper; we call the effect as "passive film formation".
 

FAQ: WHy OXygen can react with metal?

Why does oxygen react with metal?

Oxygen is a highly reactive element that readily forms chemical bonds with other elements. When exposed to oxygen, metals can undergo a process called oxidation, where they lose electrons to oxygen atoms, resulting in the formation of metal oxides.

How does oxygen react with metal?

The reaction between oxygen and metal is a redox reaction, where the metal is oxidized and oxygen is reduced. During the reaction, oxygen molecules (O2) break apart and bond with metal atoms, forming metal oxides. This process releases energy in the form of heat and light.

Why do some metals react with oxygen while others do not?

The reactivity of a metal with oxygen depends on its electronegativity and ionization energy. Metals with low electronegativity and high ionization energy, such as gold and platinum, are less likely to react with oxygen. On the other hand, metals with high electronegativity and low ionization energy, like sodium and potassium, are highly reactive with oxygen.

What factors can affect the rate of oxygen-metal reactions?

The rate of oxygen-metal reactions can be influenced by several factors, including temperature, surface area, and the presence of catalysts. Higher temperatures can increase the rate of reaction, while a larger surface area of the metal can provide more sites for oxygen to react. Catalysts can also speed up the reaction by lowering the activation energy required for the reaction to occur.

Can oxygen react with all types of metal?

While most metals can react with oxygen, some metals, such as copper and silver, are less likely to undergo oxidation. This is because they form a protective layer of oxide on their surface, which prevents further reaction with oxygen. However, under certain conditions, even these metals can react with oxygen to form metal oxides.

Back
Top