again I am looking for some help. Last time I got it here.
At first something simple:
I have a solution from water and calcium hydroxide and add sulfuric acid. The most part will form calcium sulfate and fall out of the solution. This is I think because of the low solubility of calcium sulfate(2.4g/l).
Now a bit more complicated:
I have a solution from water and calcium salts from weak organic acids like butyric acid for example. Those salts have an even lower solubility than calcium sulphate.
If I now add sulphuric acid, what will happen?
1. Will the sulfate-ion grab Ca2+ from the weak-acid-salts and form calcium sulfate what mostly falls out? Then the weak acids are "free".
2. Will the sufuric acid have no chance to get the Ca2+, because of the very low solubility of the weak-acid-salts? Then the salts and the sulfuric acid wouldn't react together.
I think it's No.1. But I don't know why. Perhaps something because sulfuric acid is a strong acid. But this is not something like a complete explanation. Perhaps my thinking that a low solubility is related to a high stability is wrong in a way. This has lead me to No.2.
Perhaps someone has something to read or keywords to google for me, where I get a full explanation, what happens. Where can I read, why the sulfuric acid is able to grab the Ca2+ out of an almost unsoluble salt?
Thanks in advance.