Is the solubility of FeFe (OH)(OH) 33 increased, decreased, or unchanged on addition of each of the following substances? Write a balanced net ionic equation for each dissolution reaction.
(a) HBr(aq).
(b) NaOH(aq).
(c) KCN(aq).

a) solubility increases

b) solubility decreases

c) solubility increases

Explanation:

I) Fe^3+(aq) + 3Br^- > FeBr3 (aq) solubility increases

II) Fe^3+(aq) + 3OH^- > Fe(OH)3(s) solubility decreases

III) Fe^3+(aq) + 6CN^- > [Fe(CN)6]^3- (aq) solubility increases

The ionic equations shown above shows the possible changes in solubility when Fe(OH)3 is added to each of the solutions mentioned in the question.

the answers would be

the first one and the second one