|
Redox (shorthand for reduction-oxidation reaction) describes all chemical reactions in which atoms have their oxidation number (oxidation state) changed. This can be either a simple redox process such as the oxidation of carbon to yield carbon dioxide or the reduction of carbon by hydrogen to yield methane (CH4), or it can be a complex process such as the oxidation of sugar in the human body through a series of very complex electron transfer processes. The term redox comes from the two concepts of reduction and oxidation. It can be explained in simple terms:
Though sufficient for many purposes, these descriptions are not precisely correct. 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 that are classed as "redox" even though no electron transfer occurs (such as those involving covalent bonds). Non-redox reactions, which do not involve changes in formal charge, are known as metathesis reactions. The two parts of a redox reaction Rusting iron A bonfire. Combustion consists of redox reactions involving free radicals.From Wikipedia under the
GNU Free Documentation License I need help with this reaction to identify whether they are reduction, oxidation, or neither ? Q. a) V2O5 (aq)---> V (s) b) P4 (s) ---> H3PO4 (aq) c) CrO3 (s) ---> H2CrO4 (aq) d) CH3CH2OH (aq) ---> CO2 (g) for a i put reduction for b i put neither for c i didnt know for d i put oxidation im i right or not? and if possible what is being reduced or oxidized Asked by joe - Tue Oct 21 22:11:25 2008 - - 2 Answers - 0 Comments A. 1. is reduction V is reduced from +5 to 0 2. is oxidation. P4 starts at 0 and P in H3PO4 becomes 5 3.neither in both sides the H is +1 O is -2 and Cr is +6 4.you are right its oxidation C is oxidized from -2 to +4 Answered by effiligious313 - Tue Oct 21 22:19:20 2008 Narrate the process of energy consumption and redox (reduction/ oxidation) of the Calvin Cycle.? Q. please help! Asked by sakuramiko12 - Tue Feb 10 08:16:43 2009 - - 1 Answers - 0 Comments A. Calvin Cycle The second stage of photosynthesis, which takes place in the stroma of the chloroplast, can occur without the presence of sunlight. In this stage, known as the Calvin Cycle, carbon molecules from CO2 are fixed into glucose (C6H12O2). The reactions of the Calvin Cycle is as follows: 1. A five-carbon sugar molecule called ribulose bisphosphate, or RuBP, is the acceptor that binds CO2 dissolved in the stroma. This process, called CO2 fixation, is catalyzed by the enzyme RuBP carboxylase, forming an unstable six-carbon molecule. This molecule quickly breaks down to give two molecules of the three-carbon 3-phosphoglycerate (3PG), also called phosphoglyceric acid (PGA). 2. The two 3PG molecules are converted into… [cont.] Answered by Peter S - Tue Feb 10 08:45:58 2009 Half Reaction Question?
Q. MnO4^- (aq) + IO3^- --> MnO2(s) + IO4^- (aq) In basic Sol. 1 H2O to balance H atoms and 2OH- to Balance O atoms..correct? I have this much, and I believe the first reduction/oxidation part Asked by probably confused! - Thu Sep 11 01:02:18 2008 - - 1 Answers - 0 Comments A. MnO4^- (aq) + IO3^- --> MnO2(s) + IO4^- (aq) Oxidation numbers MnO4-: Mn = +7 => MnO2: Mn = +4 => reduction IO3- = 1 = +5 => IO4-: I = +7 => oxidation Ox: IO3- --> IO4- IO3- + H2O --> IO4- + 2H+ IO3- + H2O + 2OH- --> IO4- + 2H2O (from the 2H+ and the 2OH-) IO3- + 2OH- --> IO4- + H2O + 3e- I think you're correct because that's exactly what I have. You should be able to write the reduction at the cathode now. Just remember to balance oxygen by adding water, and in basic solution add the hydronium ion (H+) to balance hydrogen. Then add OH- because its basic. The H+ and the OH- will form water. Answered by JohnDx5454 - Thu Sep 11 01:17:40 2008 From Yahoo Answer Search: "Reduction-oxidation"  news.google.com Wyoming Business Report Company geologists have identified a minimum of an additional 120 compiled linear miles (193 kilometers) of new redox fronts ( reduction - oxidation fronts) ... news.google.com FOXBusiness ... redox fronts ( reduction - oxidation fronts) stacked within multiple stratigraphic horizons with potential for resource development on these properties. ... and more » news.google.com AZoNano.com (5, 11, 12) On the other hand, several recent studies suggest that, instead of reduction, oxidation of arsenic(III) is the prevalent reaction under oxic ... and more » From Google News Search: "Reduction-oxidation"  jan.ucc.nau.edu 276px x 527px | 5.50kB [source page] What about Carbon Figure 12 3 Diagram for Nitrogen Sulfur and Carbon  jan.ucc.nau.edu 208px x 566px | 5.20kB [source page] The transformations between these nitrogen oxidation states are goverened by the following equations  chemcool.com 302px x 443px | 14.10kB [source page] 1 04 Base your answers to questions 59 through 61 on the diagram of the voltaic cell below 59 When the switch is closed in which half cell does oxidation occur 60 When the switch is closed state the direction that electrons will flow through the wire 61 Based on the From Yahoo Image Search: "Reduction-oxidation"  womenshealthclub.net bizex Wed, 09 Sep 2009 19:20:03 GM Oxidation. is the same as rusting. Just like metal rusts, . oxidation. in our body causes our cells to decay. . Oxidation Reduction. Potential is the yard stick of a.  naturalguideforhealthyliving.com admin Sat, 03 Oct 2009 19:00:27 GM Oxidation. /. Reduction. Technology is a procedure whereby electrons from one molecule are transferred to a different one. What this means is that if you blend two unlike metals you get an electrochemical process that oxidizes a host of ...  jbc.org Bernal-Bayard, J., Ramos-Morales, F. Fri, 25 Sep 2009 07:00:01 GM Using a genetic screen, we identified the small, . reduction. /. oxidation. -regulatory protein thioredoxin as a mammalian binding partner of the Salmonella effector SlrP. The interaction was confirmed by affinity chromatography and ... From Google Blog Search: "Reduction-oxidation" |
