latentheat Posted May 17, 2005 Posted May 17, 2005 If I react KMnO4 with glycerin, the residue remaining will be mostly Mn2O3, correct? Like this... 14 KMnO4 + 4 C3H8O3 ---> 7 K2CO3 + 7 Mn2O3 + 5 CO2 + 16 H2O My question is, could I then replace the Mn with Mg to get Mn metal? I think this would work. This would be a type of thermite, correct? Mn2O3 + 3 Mg ---> 3 MgO + 2 Mn I'm interested in taking the classic KMnO4 + glycerin experiment further. That's why I'm thinking about doing this.
budullewraagh Posted May 17, 2005 Posted May 17, 2005 you could do a thermite to get manganese, yes, but i wouldnt suggest you use Mg, as it's pretty expensive. Al works a charm
latentheat Posted May 17, 2005 Author Posted May 17, 2005 Good idea, thanks budullewraagh. Al is much cheaper. I didn't even think of it because I kind of have a fixation on magnesium and it's the first thing that popped into my mind.
H2SO4 Posted May 17, 2005 Posted May 17, 2005 you must make sure that the heat of the reaction dosnt exceed the boiling point of Mn. If it does, it will explode sending molten globs of Mn everywhere.
YT2095 Posted May 17, 2005 Posted May 17, 2005 you could also mix it with an acid to make the corresponding salt and then use electrolysis to isolate it, you`de get a far cleaner product
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