text: solublility question? would baco3 be more soluble in acid, base, or a neutral solution? (hint: h2co3 is a weak acid)  show the reactions that are important. baco3 will be more soluble in acids.  baco3(s) + 2 h+(aq)  --->   ba2+(aq) + h2co3(aq) h2co3(aq)  --->   h2o(l) + co2(g)  co2 leaves the media pushing the equilibrium to the right side in both equations.   you could also have this reaction (which is slightly acidic)  co2(aq) + h2o(l) + baco3(s)  --->  ba2+(aq) + 2 hco3¯(aq)