Answer:
A. No precipitate is formed
Explanation:
Hello,
In this case, since the reactions are:
[tex]Ca^{2+}(aq)+2HCl(aq)\rightarrow CaCl_2(aq)+2H^+(aq)\\\\Ba^{2+}(aq)+2HCl(aq)\rightarrow BaCl_2(aq)+2H^+(aq)[/tex]
We evidence no formation of insoluble salts or precipitates since both calcium and barium chlorides are largely soluble in water due to the ionic bond which binds them, thus A. No precipitate is formed.
Regards.
