Concentrated sulfuric acid reacts with KMnO4 to give Mn2O7, which can be explosive.Similarly concentrated hydrochloric acid gives chlorine. The Mn-containing products from redox reactions depend on the pH.
Acidic solutions of permanganate are reduced to the faintly pink manganese(II) sulfate ([Mn(H2O)6]2+).
In neutral solution, permanganate is only reduced by 3e- to give MnO2, wherein Mn is in a +4 oxidation state. This is the material that stains one's skin when handling KMnO4. KMnO4 spontaneously reduced in an alkaline solution to green-coloured K2MnO4, wherein manganese is in the +6 oxidation state.
A curious reaction is produced by adding concentrated sulfuric acid to potassium permanganate. Although no reaction may be apparent, the vapor over the mixture will ignite paper impregnated with alcohol. Potassium permanganate and sulfuric acid react to produce some ozone, which has a high oxidising power and rapidly oxidises the alcohol, causing it to combust. As a similar reaction produces explosive Mn2O7, this should only be attempted with great care. An approximate equation for the ozone formation is shown below.
At room temperature
6 KMnO4(aq) + 9 H2SO4(aq) → 6 MnSO4(aq) + 3 K2SO4(aq) + 9 H2O(l) + 5 O3(g)
2007-11-11 19:14:58
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answer #1
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answered by sb 7
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sure.. redox reaction happens in each and every reaction... there will be the two a ppt. shaped or a residue.... i think of it is going to combine to variety manganese oxychloride (easy pink) and a pink residue of potassium... so KMnO4 is oxidized and KCl has been decreased,,,
2017-01-06 11:54:39
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answer #2
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answered by ? 4
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By dissolving it in in an acid. The acid is usually, sulphuric acid, but hydrochloric acid or nitric acid are suitable.
2007-11-10 07:23:37
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answer #3
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answered by lenpol7 7
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when it is mixed in a solution of concentrated acid like sulphuric acid or hcl or hno3
2007-11-10 21:12:34
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answer #4
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answered by venus 3
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Finish your home work......................
2007-11-10 07:15:56
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answer #5
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answered by keep similing 3
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