oxidation, reduction

kristo · #1 Jan 21, 2007, 02:45 AM

Fe2O3 + 3H2 -> 2Fe + 3H2O

Which materials are reductants, which are oxidants?
Please explain the solution, too. Any help is appreciated

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kristo · Jan 21, 2007, 03:40 AM

Quote:

Originally Posted by Capuchin

The oxidants oxidise other compounds, ie they gain oxygen (or, more completely, they gain electrons). In your case this would be H2, as they take the oxygen from the Fe2O3.

Now use my logic to argue which are the reductants.

So Fe is reductant, as he loses 3 electrons?

rudi_in · Jan 21, 2007, 04:28 AM

Thank you for posting your question to the Ask Me Help Desk.

Iron is reduced but it is because it gained three electrons.

Remember this as a tool...

OILRIG

Oxidation Is Loss, Reduction Is Gain

We are talking about electrons here.

ChemCatalyst · Jan 29, 2007, 02:26 PM

Quote:

Originally Posted by rudi_in

Thank you for posting your question to the Ask Me Help Desk.

Iron is reduced but it is because it gained three electrons.

Remember this as a tool...

OILRIG

Oxidation Is Loss, Reduction Is Gain

We are talking about electrons here.

I was taught a different acronym for remembering the difference between oxidation and reduction: LEO the lion says GER
Lose Electrons Oxidize, Gain Electrons Reduce



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