Question

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

(B) Lead acetate

In order to obtain yellow precipitate of lead iodide, the salt that needs to be used (instead of lead nitrate) should also contain lead. Thus, option (C) and (D) are ruled out. Lead sulphate being an insoluble salt can not be used for the given activity. Thus, lead acetate which is a soluble salt in water can be used in the given activity.​