Do you know how to separate calcium carbonate from potassium bromide?

Answer 1

It kind of depends if you want both of them pure.
Calcium carbonate is not very soluble in water so you could just add water, potassium bromide will dissolve, filter out the calcium carbonate and evaporate the water to retrieve potassium bromide.
However calcium carbonate is partially soluble in water
ksp =3-5 * 10^-9 so you will not have a very good separation: calcium carbonate will be quite pure but you'll have a not so good yield, potassiu bromide will have quite a lot of calcium carbonate remaining with it.

It would be even better if you add a concentrated solution of potassium carbonate instead of water. Then less calcium carbonate would dissolve due to the common ion effect.
You would have an excess of carbonate ions in the filtrate but you could remove most of it by acidifying a bit the solution with HBr (so that carbonates become carbonic acid which is unstable, but also you use this particular acid in order to avoid adding any other anions in your solution) and boil the solution (the carbonic acid breaks into carbon dioxide)

Answer 2

I'm not sure, but a traditional method for the manufacture of potassium bromide is the reaction of potassium carbonate with a bromide of iron, Fe3Br8, made by treating scrap iron under water with excess Br2:
4 K2CO3 + Fe3Br8 → 8 KBr + Fe3O4 + 4 CO2
Iron and calcium have the same outer electrical shell, so I assume you could trade the two elements in this reaction.
So, if you reversed this formula, adding carbon dioxide to the two elements could separate them.
I'm probably completely wrong, but at least I took a shot at it. Maybe my bumbling put you in the right direction.

Answer 3

hire a good divorce lawyer, they can separate white from rice if you've got enough money!!!!

Answer 4

No.