Question

Question 13

In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate?

(a) Lead sulphate (insoluble)
(b) Lead acetate
(c) Ammonium nitrate
(d) Potassium sulphate

Answer 1

Option (b) is correct.

Lead acetate can be used in place of lead nitrate because like lead nitrate, it is also water soluble. It will dissociate into ${\text{Pb}}^{2+}$ ions in water and produce lead iodide. Lead sulphate being water insoluble will not dissociate into ${\text{Pb}}^{2+}$ ions, hence, cannot be used.