00:01
All right, this question is asking us the difference between molecular, complete ionic, and net ionic equations.
00:11
So i'm going to write out a reaction like you would typically see, and we'll talk about what type of equation i wrote and why we're calling it that.
00:29
So we'll do a simple reaction.
00:32
Let me put in the states of matter.
00:36
So this reaction is written as a molecular reaction.
01:02
This is showing us each of these molecules written out just in chemical formulas.
01:09
It's got the states of matter, but they're written out as compounds.
01:20
Our complete ionic equation is where we're going to separate anything that has aqueous next to it, the aq.
01:31
And we're going to separate those into ions.
01:48
You're not going to touch anything that has an s, an l, or a g next to it.
01:53
If it's a solid liquid or gas, you leave it alone.
01:56
So in this reaction that i wrote above, we would end up with n -a -plus, which is aqueous plus oh -minus, which is aqueous, plus the h -c -l has an aq next to it, so we're going to split this into h -pluses and c -l -l -m.
02:22
Minuses.
02:25
You can see this is quite long to write out.
02:30
This is going to give me water, which is written as a liquid.
02:34
So i'm going to leave that alone.
02:36
I'll copy it, but i'm not going to do anything with it.
02:39
And then i'm going to separate out my nacl into na pluses and cl minuses.
02:50
That is the complete ionic.
02:52
It shows everything written out in its ion form.
02:58
And they can be quite lengthy to write out.
03:01
Your net ionic equations leaves out our spectators.
03:17
So we take this complete ionic and we scan through and decide if it has the same ion on both sides, it is then a spectator ion and it cancels out because this ion is in solution and it's there in the beginning.
03:34
It's there at the end.
03:35
It doesn't do anything.
03:37
It was just a means to get the ion that we needed to react into solution.
03:43
So when i say i'm going to leave out the spectators, anything that's the exact same way on both sides, i am not going to include in this net ionic equation.
03:53
So the na plus appears as na plus aqueous on both sides.
03:58
And so does the cl minus...