The term redox comes from the two concepts of reduction and oxidation. It can be explained in simple terms:
- Oxidation describes the loss of electrons by a molecule, atom or ion
- Reduction describes the gain of electrons by a molecule, atom or ion
Which gains and loses electrons can be easily memorised by the abbreviation OIL RIG, which stands for, "Oxidation Is Loss," or losing electrons, and "Reduction Is Gain," or gaining electrons. redox reaction can also happen during sharing electrons to form a product. in oxidation reduction reaction. the anion give an electron to the cation,so both the ions will have a different charges to attract each other. in oxidation reduction reaction the oxidizing reagent pull an electron from the other atom to have a net positive charge. the reducing reagent give an electron to have a net negative charge.
But there are exceptions.
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- Now elementary iron has been processed.
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- This can be a simple redox process, such as the oxidation of carbon to yield carbon dioxide, the reduction of carbon by hydrogen to yield methane (CH4), or a complex process such as the oxidation of sugar in the human body, through a series of very complex electron transfer processes.
- Oxidation and reduction properly refer to a change in oxidation number – the actual transfer of electrons may never occur. Thus, oxidation is better defined as an increase in oxidation number, and reduction as a decrease in oxidation number. In practice, the transfer of electrons will always cause a change in oxidation number, but there are many reactions which are classed as "redox" even though no electron transfer occurs (such as those involving covalent bonds).
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