Now COPS is used for insoluble ionic solutes, and we're going to say it also has its exceptions now. These exceptions will now create soluble aqueous ionic compounds, and we know that cyber aqueous ionic compounds will break up into ions. Now how do we remember the exceptions here? We're just going to say, oh snap, it's the cops.
So when we're looking at the term comps, exceptions can arise when we get to O and when we get to S. So here if we take a look here at this chart we have CC here represents carbonate ion and also chromate ion. So carbonate and chromate, if we're just looking at comps and not thinking about Ghana Cash, we're going to say there are no exceptions. So we're going to form a precipitate.
In this case, OH, O stands for oxides, which is O2- and hydroxide which is OH-. Now here this is when we have our exceptions. So here the exception is something we remember CBS when we talked about Ghana cache. Now here this means that if oxide or hydroxide are connected to calcium, barium or strontium, they're going to create a soluble aqueous compound which can break up into ions.
Next we have P, which stands for phosphate. Remember, phosphate ion is PO43-. Here, if we're just looking at coms itself, we have no exceptions. It'll form a precipitate and then finally we have which stands for sulfide, which is S2-. It also has the same exceptions as O. So here calcium, barium and strontium.
So keep this in mind, we're going to use a, we're going to look at Ghana cache and comps overall to tell if a compound at the end of the day is soluble or insoluble.