00:02
Hi there.
00:03
In this question, we are given the balanced equation for this double replacement reaction.
00:07
In a double replacement reaction, the ions in the two ionic compounds exchange partners.
00:13
So the positive from the first goes with the negative from the second, and the positive from the second goes with the negative from the first.
00:19
In order to have a reaction, one of the new products must be insoluble.
00:23
And we see right here that that is the silver bromide.
00:27
It forms a precipitate.
00:29
All right.
00:29
What we want to write here then is the net.
00:32
Ionic equation.
00:40
The net ionic equation shows what combines to produce the reaction.
00:45
In other words, to produce the precipitate.
00:48
The net ionic equation omits the spectator ions.
00:54
The spectator ions are the ones that are the same on both sides of the equation.
00:59
So in other words, they're not doing anything.
01:00
They're just floating around watching what's going on, which is why they're called spectator ions.
01:07
All right, so let's identify our spectator ions.
01:10
Well, we see.
01:10
We see...