# Calcium-containing acidic solution

I want to prepare an acidic solution containing Ca ions. I thought about dissolving calcium sulphate, acetate or phosphate in $\pu{2 M}$ $\ce{H2SO4}$ or $\ce{H3PO4}$ solutions, but it seems that $\ce{Ca}$ cations react with sulphate anions.

Is it true? And is there any way to make a $\ce{Ca}$-containing acidic solution?

• Thanks for your answer. But actually I forgot to say I need Cl & F free solution... – Mohammad Jul 13 '17 at 21:10
• Then go for nitrate. And if you don't like it for some reason, there are quite a few more acids out there. – Ivan Neretin Jul 13 '17 at 21:32