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Oxidation reduction reaction definition biology
The compounds that make up living organisms, such as concours video facebook plants and animals, are very complex.
Here, oxidation is gain of oxygen, while reduction is loss of oxygen.
Redox and electron exchanges, for many years, chemists thought of oxidation and reduction as involving the element oxygen in some way or another.
Actually its less confusing to write the equation in actual reaction form, not ionic: K2Cr2O7 6 KI 7 H2SO4 Cr2(SO4)3 3 I2 4 K2SO4 7 H2O.Corrosion: An oxidation-reduction reaction in which a metal is oxidized and oxygen is reduced, usually in the presence of moisture.In the meantime, the copper(II) ions remove electrons from magnesium to form magnesium ions.That's where the name oxidation came from.In some reactions, oxidation and reduction may be viewed in terms of oxygen transfer.
In this context, iron(III) oxide is the oxidizing agent which gives oxygen to another molecule.
The reaction is similar to the combustion of gasoline shown above, but it occurs much more slowly.
An old, less-common definition of oxidation and reduction examines the reaction in terms of protons or hydrogen.
Another way to remember which part of the reaction is oxidized and which is reduced is to simply recall reduction mean reduction in charge.
All the information in our site are for educational uses.There are two acronyms that may help you keep oxidation and reduction straight.Together, reduction and oxidation form redox reactions ( red promotion matelas conforama uction- ox idation redox).The two equations below show what happens when coal (which is nearly pure carbon) and gasoline (C 8 H 18 ) burn.In an oxidation-reduction reaction like the one above, the element that is oxidized always loses electrons.
The more general definition of redox reactions, then, involves the gain and loss of electrons rather than the gain and loss of oxygen.
Reducing agent: A chemical substance that takes on oxygen or gives up electrons to another substance.