You are watching: What are the main redox reactions in cellular respiration
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oxidation-reduction reaction, likewise called redox reaction, any kind of chemical reaction in i m sorry the oxidation variety of a participating chemical types changes. The hatchet covers a big and varied body of processes. Numerous oxidation-reduction reactions room as common and familiar as fire, the rusting and also dissolution of metals, the browning of fruit, and respiration and also photosynthesis—basic life functions.
Most oxidation-reduction (redox) processes involve the transport of oxygen atoms, hydrogen atoms, or electrons, through all three processes sharing two vital characteristics: (1) they space coupled—i.e., in any type of oxidation reaction a reciprocal reduction occurs, and also (2) they involve a characteristic net chemical change—i.e., one atom or electron goes native one unit of issue to another. Both reciprocity and net readjust are illustrated below in instances of the three many common varieties of oxidation-reduction reactions.
Types of chemistry Reactions
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Carbon reacts through mercury(II) oxide (a link in i beg your pardon mercury has actually a bonding volume expressed together +2; see below Oxidation-state change) to produce carbon dioxide and also mercury metal. This reaction can be created in equation form:
Carbon, receiving oxygen, is oxidized; mercury(II) oxide, losing oxygen, undergoes the security reduction; and the net change is the transport of 2 oxygen atom from mercury(II) oxide units to a carbon atom.
Hydrogen atoms space transferred indigenous hydrazine, a compound of nitrogen and also hydrogen, to oxygen in the following reaction:
Hydrazine, shedding hydrogen, is oxidized to molecule nitrogen, when oxygen, obtaining hydrogen, is diminished to water.
Zinc metal and copper(II) ion react in water solution, creating copper metal and also an aqueous (denoted by aq) zinc ion follow to the equation
With the deliver of 2 of that electrons, the zinc metal is oxidized, ending up being an aqueous zinc ion, when the copper(II) ion, gaining electrons, is reduced to copper metal. Net adjust is the carry of two electrons, lost by zinc and also acquired by copper.
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Because of their complementary nature, the oxidation and also reduction procedures together are described as redox reactions. The reactant the brings around the oxidation is dubbed the oxidizing agent, and that reagent is itself lessened by the to reduce agent. In the instances given above, mercury(II) oxide, oxygen, and also the copper(II) ion space oxidizing agents, and also carbon, hydrazine, and zinc room the reducing agents.