00:01
In order to compare ksp's to determine relative solubilities, we need to have the salts form the same number of ions.
00:11
So the first one is silver sulfate, which is ag2so4.
00:18
It produces one sulfate and two silvers for a total of three ions.
00:23
So we could compare the ksp of silver sulfate with anything else creating three ions.
00:36
So both a, pbcl, creates three ions, and b, baf2, creates three ions.
00:52
Then in the case of lead sulfate, that's pbso4, it creates two ions.
01:00
So we could compare its ksp directly to the ksp of c, barium chromate, producing a barium ion and a chromate ion, and d, barium sulfite, producing a barium ion and a sulfite ion.
01:23
Next, they want us to express the k in terms of molar solubility for each of these.
01:28
So silver sulfate is going to dissociate, producing two silver ions and one sulfate.
01:43
Ksp will be equal to the silver concentration squared multiplied by the sulfate concentration.
01:57
So when one mole of the solid dissolves in a liter of solution, we get one mole of sulfate in a liter of solution...