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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?

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  • $\begingroup$ Thanks for your answer. But actually I forgot to say I need Cl & F free solution... $\endgroup$ – Mohammad Jul 13 '17 at 21:10
  • $\begingroup$ Then go for nitrate. And if you don't like it for some reason, there are quite a few more acids out there. $\endgroup$ – Ivan Neretin Jul 13 '17 at 21:32
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You could dissolve calcium chloride in water and add a small amount of HCl.

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  • 2
    $\begingroup$ This is an answer, it just isn't phrased as one. You guys should look at the question before reviewing. $\endgroup$ – orthocresol Jul 12 '17 at 13:38

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