00:01
Hi there.
00:02
What we have here potentially is a double replacement reaction.
00:08
In double replacement reaction, we have two aquaic ionic compounds that react.
00:13
So i'm going to genope those here as ab and x, y.
00:18
And what happens is the ions exchange.
00:21
So the positive ion from the first goes with the negative ion from the second, and the positive ion from the second combines with the negative ion from the first.
00:30
Now you may remember i set a potential double replacement.
00:33
That is because in order for this to be a reaction, we must form an insoluble product.
00:39
So one of these new products must be insoluble for there to be a reaction.
00:45
Ok, so ultimately, we want a net ionic equation for this reaction.
00:49
But what i want to write first is just the molecular equation.
00:53
And then we can write the net equation easily from that if there is one.
00:58
Ok, so we are reacting ammonium sulfate and barium nitrate.
01:03
So ammonium is nh4 with a 1.
01:05
One plus charge, so we would need two of those to go together with the sulfate.
01:11
That's aquas, and our other product is, or other reactant rather, is barium nitrate.
01:18
So b .a.
01:18
Has a two plus charge.
01:20
Nitrate is n .03 with a single negative charge, so we would need two of those.
01:25
All right, when these exchange ions, the ammonium is going to go together with the nitrate.
01:34
Since it's just positive one and negative one, we don't need any subscripts or any additional subscripts.
01:41
And we know that all nitrates from the solubility rules, all nitrates are soluble.
01:46
So this remains aqueous.
01:48
It is not forming an insoluble product...