Reducing Metal: Oxygen's Role?

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In summary, when carbon monoxide gas is passed over hot iron (III) oxide, it reacts to produce carbon dioxide and pure iron. When attempting this problem, the question of whether the reduced metal will always end up as an element, as in this case, or if oxygen is not listed in the answer because it is a spectator, is raised. However, using carbon to reduce the iron oxide results in pure iron being produced, according to the textbook.
  • #1
hoedown_j
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I'm wondering when the metal that is being reduced reacts, does it always end up by itself? Example:

Carbon monoxide gas is passed over hot iron (III) oxide.
(II) (III) (IV) (II)
CO + Fe2O3 ---> CO2 + Fe

When i first attempted this problem I got FeO instead of just Fe. So I am wondering will the reduce metal always end up just being an element like in this problem? Or is oxygen not listed in the answer because it is a spectator?
 
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  • #2
Sorry, I haven't learned redox reaction or professional people on chemistry.
But in this case, I will use carbon to reduce the iron oxide instead.
According to my book, pure iron should be given out.
 
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In the process of reducing metal, oxygen plays a crucial role in the reaction. When a metal is being reduced, it is reacting with oxygen to form a metal oxide. In the example given, carbon monoxide gas is reacting with iron (III) oxide to form carbon dioxide gas and iron metal. The oxygen in the iron (III) oxide is being reduced by the carbon monoxide gas, resulting in the formation of iron metal. This is why the final product is just Fe and not FeO. Oxygen is not listed in the answer because it is a spectator in this reaction, meaning it is present but does not participate in the overall reaction. It is important to note that in some cases, the reduced metal may not end up as an element, but rather as a different compound depending on the reactants and conditions of the reaction. However, in the case of reducing metal with oxygen, the end product will typically be the metal in its elemental form.
 

1. What is the role of oxygen in reducing metal?

Oxygen is a key component in the process of reducing metal. When exposed to high temperatures, oxygen reacts with metal to form metal oxides. This reaction releases energy and helps break down the metal into its pure form.

2. Can metal be reduced without oxygen?

Yes, metal can be reduced without oxygen. This process is known as smelting and involves the use of reducing agents such as carbon or hydrogen to remove the oxygen from the metal.

3. How does oxygen affect the purity of the reduced metal?

The presence of oxygen in the reducing process can lead to impurities in the reduced metal. These impurities can affect the physical and chemical properties of the metal, making it less pure.

4. What are the different methods for reducing metal with oxygen?

There are several methods for reducing metal with oxygen, including direct reduction, indirect reduction, and electrolytic reduction. These methods vary in terms of the type of furnace and reducing agent used.

5. What are some benefits of using oxygen in the reduction of metal?

Using oxygen in the reduction of metal offers several benefits, including faster and more efficient reduction, lower energy costs, and reduced carbon emissions. It also allows for the production of higher quality and purer metals.

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