Determine whether of not each compound will be more soluble in acidic soln than in pure water. Explain.

A). Hg2Br2
B). Mg(OH)2
C). CaCO3
D). AgI

I think acid, neutral,acid,neutral ???

Help please!:) thAnks

2 answers

An acid, at least for this discussion contains H^+. So what will that combine with in a salt? It will combine with the anion, of course. So if the anion will react with the H^+, then it will be more soluble in an acid.
Hg2Br2 will give HBr but that is a strong acid and will ionize 100%; no reaction. solubility not increased.

Mg(OH)2. Add acid, it reacts with the OH part to make water, solubility increased by adding acid.

I'll leave the other two for you.
Determine whether or not AgI will be more soluble in acidic solution than in pure water.