The first thing we're going to worry about are the solubility rules,
determining which compounds are soluble.
Whenever we see any of these ions, lithium, sodium, potassium, ammonium,
nitrate, or acetate, we know that that compound is going to be soluble.
So we don't have to worry about any other rules, any of these,
it's going to be soluble.
Likewise, when we see chloride, bromide, and iodine.
These compounds are soluble, except when the cation is silver, mercury, or lead.
So it's important to understand the rules but also the exceptions to those rules.
Sulphates are also soluble.
We have a few more exceptions here.
Strontium, barium, lead, silver, and calcium are exceptions to that.
For insoluble compounds remember, any time we see one of our lithium,
sodium, potassium, or ammonium ions, we know that it's going to be soluble.
Our exceptions on the hydroxide and
sulfide are calcium, strontium, and barium.
So what this says is that hydroxides are insoluble in water,
except for calcium, strontium, and barium.
And of course, lithium, sodium, potassium, and ammonium.
These will trump all of our solubility rules.
Likewise with sulphide, for carbonated phosphate,
the only exceptions are going to be for lithium, sodium, potassium, and ammonium.
Otherwise carbonate and phosphate compounds are insoluble.