How to Write a Half Equation for the Oxidation Reaction

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Writing a half equation for the oxidation reaction is something also known as a redox reaction. Write a half equation for the oxidation reaction with help from an experienced chemistry professional in this free video clip.

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Video Transcript

Hi, I'm Robin Higgins, and this is how to write the half equation formula for the oxidation reaction. So, let's take a look at a typical oxidation reduction reaction, otherwise known as a redox reaction. So right here, we have a reaction, a reacting manganese compound with a carbon compound, and it has an oxidation reduction effect on it. So the first thing we do for half equations is to separate out the different substituents. So, first we have our manganese compound, and what happened to this guy is that he started out manganese 1, 4 oxygens, and he ended up just 1 manganese, but now just to 2 oxygens. So now let's look at the other compound, we have our carbon compound, this started out 2 carbons, 4 oxygens, ended up as a carbonate, 1 carbon, 3 oxygens. So now we have to identify which one was oxidized and which one was reduced. Well, our manganese has less oxygens than it used to be. So this actually gets reduced, or it's the reduction. And now, we see that the ratio went from 2 carbons, 4 oxygens, to 1 carbon, 3 oxygens, so this was actually the oxidation portion. And we're done. This half reaction is the half responsible for oxidation. I'm Robin Higgins, and this has been how to write the half reaction for an oxidation reaction.


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