00:01
Right, so we have the equation, electron transfer reaction, the redox reaction, manganese solid plus nickel 2 plus aqueous go into manganese 2 plus plus nickel.
00:33
Alright, so to determine the half oxidation equation and the half reduction equation, we're going to use the concept of oxidation number.
00:44
Now with respect to oxidation number, oxidation is an increase in oxidation number, reduction is a decrease in oxidation number.
00:53
Now for you to be able to tell what oxidation number is, there is a set of rules that you're supposed to know.
00:59
So i would assume that you know those rules already.
01:01
If you don't, you have to check that up and learn the rules for assigning oxidation number.
01:06
One of the rules, right, we're going to try to determine the oxidation number of each chemical species that appears in this equation.
01:13
For example, manganese, right, its oxidation number on the left hand side here is zero.
01:18
Its oxidation number is zero on the left hand side, right, for manganese.
01:24
And that's because the first rule says that the oxidation number of an element or any atom in its standard state, whenever it's not in a compound, it's on its own, is zero.
01:34
On the right hand side, however, the oxidation number of manganese is plus two...