Chapter Name : Redox Reactions |
Sub Topic Code : 102_11_08_03_05 |
Topic Name : Oxidation Number |
|
Sub Topic Name : Disproportionation Reactions |
A redox reaction in which a same element present in a
particular compound in a definite oxidation state is oxidized as well as
reduced simultaneously.
Decomposition Reaction,exothermic reaction
The UV photolysis of mercury(I)
chloride (Hg2Cl2 ? Hg + HgCl2) is a
disproportionation.
Is respiration a disproportionation reaction or not?
Key Words | Definitions (pref. in our own words) |
---|---|
Disproportionation Reaction | It is a specific type of redox reaction in which a species is simultaneously reduced and oxidized to form two different products. |
Exothermic reaction | An exothermic reaction is a chemical reaction that releases energy in the form of light or heat. It is the opposite of an endothermic reaction. |
Gadgets | How it can be used |
---|---|
White phosphorus | White phosphorus undergoes disproportionation when it reacts with water and sodium hydroxide. |
The Boudouard reaction is for example used in
the HiPco method for producing carbon nanotubes, high
pressure carbon monoxide disproportionates when catalysed on the
surface of an iron particle.
Chemistry lab
Examples | Explainations |
---|---|
Fermentation | In fermentation, part of the substrate molecule itself accepts the electrons. Fermentation is therefore a type of disproportionation, and does not involve an overall change in oxidation state of the substrate. |
Disproportionation, is a specific type of redox
reaction in which a species is simultaneously reduced and oxidized to form two
different products.
The element in the form of
reacting substance is in the intermediate oxidation state; and both higher and
lower oxidation states of that element are formed in the reaction.
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