Sciencemadness Discussion Board

Oxyides - black hole

Ashendale - 5-4-2005 at 07:08

I know this is really easy question, but can't remember it. : ( (Searched to forums, yet found no topic about it o.O)

I have problem remembering is it possible to get Oxyde -----> Metal/non-metal + Oxygen

4Fe + 3O2 = 2Fe2O3
2Fe2O3 -----> 4Fe + 3O2

React with some acid?

Sorry for being noob : P

[Edited on 5-4-2005 by Ashendale]

Scratch- - 5-4-2005 at 07:13

Oxyde is spelled oxide, that may be why you dont get any results. You could try electrolysis because electricity is cheap or you could try the common 3% H2O2.

12AX7 - 5-4-2005 at 09:31

Hm, oxides are remarkably hard reactions to reverse... you usually need to combine one or the other to get them apart (reduction: remove oxygen with H or C: Fe2O3 + 3CO > 2Fe + 3CO2 or Fe2O3 + 3H2 > 2Fe + 3H2O, neither leaves O2; or oxidation: Fe2O3 + 6HCl > 2FeCl3 + 3H2O, although I'm told HCl doesn't have the oxidizing power to form that in particular).

Most oxides have high melting points so electrolytic dissociation is a stretch... it can be done in solution though. Aluminum is produced in this manner, though I would be inclined to think the process actually dissociates the sodium fluoride ions, which then reacts with the Al2O3 in solution to leave aluminum and oxygen (which reacts with the graphite electrodes).


Scratch- - 5-4-2005 at 14:57

Oh, I was confused by his post. I thought he was trying to get an oxide from a metal.

neutrino - 5-4-2005 at 15:25

The first one is simple combustion, the second reminds me of a thermite reaction.

Ashendale - 6-4-2005 at 05:04

Originally posted by Scratch-
Oh, I was confused by his post. I thought he was trying to get an oxide from a metal.

Well my English isn't the best side of mine, so... :(