Which of the following will be more soluble in an acidic solution than in pure water?

AgBr
Be(OH)2
RbClO4
CaCO3
PbSO4

2 answers

Be(OH)2 and CaCO3 should be much more soluble in acid solution than in pure water. I don't know the level of chemistry you are in but after beginning chemistry you will learn that PbSO4 is somewhat more soluble in acid solution, too although it isn't highly soluble.
Which of the following ionic compounds will be more soluble in acid solution than in water: (a) BaSO4, (b) PbCl2, (c) Fe(OH)3, (d) CaCO3? with explanation