Which of the following salts, each having very limited solubility in water would dissolve to a greater extent upon acidifying the solution? a) Fe(OH)3
b) AgCN
c) PbI2
A) a only
B) b only
C) c only
D) a and b
E) b and c

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

Hi + naoh -> h2o + nal