00:01
To write the correct ionic equation, we first need to know our solubility rules.
00:06
If a precipitate doesn't form, then no reaction occurs.
00:10
We also need to know how to correctly write the chemical formulas for these compounds.
00:18
The first one is potassium sulfate.
00:20
Sulfate has a 2 -minus charge.
00:24
Potassium has a plus 1.
00:27
So when they combine, we'll need two potassiums for every sulfate.
00:31
The next compound is lead to acetate.
00:37
Acetate has a one minus charge.
00:40
The lead two tells us that it has a two plus charge, so we'll need two acetates for every lead two.
00:47
Then when the cat -ion switch places, according to solubility rules, most sulfates are soluble, but lead is an exception.
00:57
So lead sulfate is insoluble and will form a precipitate, so a reaction will occur.
01:03
The potassium will then combine with the acetate, one potassium with a plus one charge for every one acetate with a one minus charge.
01:12
Then to balance the equation, we see we have two potassium and two acetates, so we need to put a two in front of the potassium acetate.
01:21
The next reaction is copper two nitrate...