Permanganate ion, oxidation

Permanganate ion oxidizes chloride ion in acid solution to chlorine gas. The net ionic equation is ... 

Answer the following questions and, for each yes response, write a balanced cell reaction and calculate the standard cell potential, (a) Can H2 reduce Ni2+ ions to nickel metal (b) Can chromium metal reduce Pb2+ ions to lead metal (c) Can permanganate ions oxidize copper metal to Cu2+ ions in an acidic solution (d) Can Fe3+ ions oxidize mercury metal to mercury (I) ... 

The permanganate ion oxidation of imines to nitrones is very much dependent on the reaction conditions. For the investigation of this dependency, reactions with benzylidene-r-butylamine, la, were carried out (equation 8). la was oxidized with m-chloroperbenzoic acid to give the corresponding oxaziridine 3a. As byproduct traces (<3%) of the nitrone 2a, amine 4a and benzaldehyde were formed. The permanganate ion and m-chloroperbenzoic acid may then oxidize the imine in two different ways. 

Phase transfer catalysts (PTCs) are known to play an important role in the permanganate ion oxidation of alkenes46-53 and it was found that they are also important for the imine oxidation41. In the absence of PTCs only a slow reaction was observed. The influence of different PTCs on the reaction course of the permanganate ion oxidation of la has been studied and the results are listed in Table 241. It has been found that long-chain tetraalkylammonium salts are the best PTCs for that oxidation reaction41. 

Permanganate ions oxidize iron(II) to iron(III) in sulfuric acid solution. Permanganate ions are reduced to manganese(II) ions. Write the balanced net ionic equation for this reaction. 

See directions preceding Exercise 58.) (a) Will permanganate ions oxidize to Cr207 in acidic solution (b) Will sulfate ions oxidize arsenous acid, HjAsOj, to arsenic acid, HjAs04, in acid solution ... 

Top Each test tube contains potassium permanganate, KIVln04,and oxalic acid, H2C2O4, at the same concentrations. Permanganate ion oxidizes oxalic acid to CO2 and HjO.One test tube was placed in a beaker of warm water (40°Q the other was kept at room temperature (20°C).6offom After 10 minutes, the test tube at 40°C showed a noticeable reaction, whereas the other did not. 

Permanganate ion oxidizes sulfite ion in basic solution according to the following skeleton equation ... 

Whereas in acidic medium, permanganate ions oxidize iodide ions to give iodine, in neutral and weakly alkaline medium, iodate ions are formed. This is logical since... 

Uncombined elements are all given zero oxidation state. Consider (a) manganese in the permanganate ion, MnO there are four... 

The intermediate formed in the oxidation of alkenes by permanganate ion is considered a cycHc manganate(V) ester (92). Investigations have suggested that manganate(V) intermediates play a significant role in virtually all permanganate oxidation reactions. It is therefore the further reactions of the... 

The purple permanganate ion [14333-13-2], MnOu can be obtained from lower valent manganese compounds by a wide variety of reactions, eg, from manganese metal by anodic oxidation from Mn(II) solution by oxidants such as o2one, periodate, bismuthate, and persulfate (using Ag" as catalyst), lead peroxide in acid, or chlorine in base or from MnO by disproportionation, or chemical or electrochemical oxidation. 

Oxidation Reactions. Potassium permanganate is a versatile oxidizing agent characterized by a high standard electrode potential that can be used under a wide range of reaction conditions (100,133—141). The permanganate ion can participate in a reaction in any of three distinct redox couples. 

D. G. Lee, The Oxidation ofiOrganic Compounds by Permanganate Ion andHexavalent Chromium, Open Court Publishing Co., La SaUe, IU., 1980. 

Sometimes, though, it is by no means obvious how a given half-equation is to be balanced. This commonly happens when elements other than those being oxidized or reduced take part in the reaction. Most often, these elements are oxygen (oxid. no. = — 2) and hydrogen (oxid. no. = +1). Consider, for example, the half-equation for the reduction of the permanganate ion,... 

Iron(II) can be oxidized to iron(m) by permanganate ion in acidic solution. The permanganate ion is reduced to manganese(II) ion. 

Use oxidation numbers to balance the reaction between ferrous ion, Fe+2, and permanganate ion, MnOr, in acid solution to produce ferric ion, Fe+3, and manganous ion, Mn+2. 

Oxidizing agents also attack the double bond. When a reaction between an unsaturated compound and the permanganate ion occurs, the violet color of permanganate fades. This reaction, as well as reaction (29b) in which a color change also occurs, is used as a qualitative test for the presence of double bonds in compounds. 

Prior equilibria. The oxidation of tris-( 1, lO-phenanthroline)iron(II) ion by permanganate ion is characterized by this rate law 18... 

Kinetic isotope effect. The oxidation of benzaldehyde by permanganate ions is believed to occur by hydride abstraction. What value of k /kD do you predict for C6H5CHO/ C6H5CDO For C6H5CHO/C6D5CHO ... 

The products of the reaction between bromide ions and permanganate ions, Mn04, in basic aqueous solution are solid manganese(IV) oxide, MnO>, and bromate ions. Balance the net ionic equation for the reaction. 

Use data from Appendix 2B to determine whether chlorine gas will oxidize Mn2+ to form the permanganate ion in an acidic solution. 

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