Homework Help: Chemistry

Posted by Alexis on Sunday, March 20, 2011 at 9:54pm.

a redox reaction is a reaction in which
1.only reduction occurs
2.only oxidation occurs
3.reduction&oxidation occur at the same time
4.reduction occurs first and then oxidation occurs

i think its 3 or 4.

Chemistry - DrBob222, Sunday, March 20, 2011 at 10:18pm
It's 3. If something gains electrons it must gain them from somewhere. And that somewhere is losing electrons at the same time. Intermediates may be involved and some of them may be charged; however, I would shy away from 4 because if reduction occurs first followed by oxdn, why couldn't oxdn occur first followed by redn?

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