# How do I isolate calcium from calcium carbonate?

I have the ability to use many kinds of reactions, and the use of most common acids/bases.

• An easy method is to add vinegar to the calcium carbonate to remove the carbonate and get calcium acetate (in solution). What do you want to use the calcium for? – LDC3 Nov 8 '14 at 1:10

To obtain $\ce{Ca}$ metal from $\ce{Ca (+II)}$, you need to perform a reduction process. For this purpose, you would need a very strong reducing agent, because calcium is very close to the bottom in the Ellingham diagram (used in metallurgy for this same purpose: obtain metals from its salts).