The reaction including the redox reaction is reaction number 3
N₂ + 3H₂ ---> 2NH₃
There are elements that experience changes in oxidation number in the reaction
Oxidation is an increase in oxidation number, while reduction is a reduction in oxidation number.
The formula for determining Oxidation Numbers in general:
- 1. Single element atomic oxidation number = 0. Examples of Ar, Mg, Cu, Fe, N₂, O₂, etc. = 0
Group IA (Li, Na, K, Rb, Cs, and Fr): +1
Group IIA (Be, Mg, Ca, Sr and Ba): +2
H in compound = +1, except metal hydride compounds (Hydrogen which binds to groups IA or IIA) oxidation number H = -1, for example, LiH, MgH₂, etc.
- 2. Oxidation number O in compound = -2, except OF2 = + 2 and in peroxide (Na₂O₂, BaO₂) = -1 and superoxide, for example KO₂ = -1/2.
- 3 The oxidation number in an uncharged compound = 0,
Total oxidation number in ion = ion charge, Example NO₃⁻ = -1
In a redox reaction, it is also known
Reducing agents are substances that experience oxidation
An oxidizer is a substance that is reduced
Redox reactions are reactions that are accompanied by changes in oxidation number, so what must be examined is whether there are elements that experience changes in oxidation number in the reaction
1. CuSO₄ + BaCl₂ ---> BaSO₄ + CuCl₂
The oxidation number in this reaction, the elements having oxidation numbers remain good at reactants and products
Cu = + 2
SO₄ = -2
Ba = +2
Cl = -1
2. Pb (NO₃)₂ + 2NaCl ---> PbCl₂ + 2NaNO₃
The oxidation number of the elements involved is also constant
Pb = +2
NO3 = -1
Na = +1
Cl = -1
3. N₂ + 3H₂ ---> 2NH₃
In this reaction, there is a change in the oxidation number of elements N and H
N = from 0 to -3
H = from 0 to +1
N₂ undergoes a reduction reaction because the oxidation number drops while H₂ undergoes an oxidation reaction because the oxidation number rises
4. K₂SO₄ + BaCl₂ ---> BaSO₄ + 2KCl
The oxidation number of the elements involved is also constant
K = +1
SO₄ = -2
Ba = +2
Cl = -1
So that the reaction including the redox reaction is reaction number 3
N₂ + 3H₂ ---> 2NH₃
the reduction process
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an element's oxidation
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an element's oxidation number increase
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Keywords: oxidation, reduction, The oxidation number