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 acetateC. Ammonium nitrateD. Potassium sulphate

To replace lead nitrate in the double displacement reaction and still achieve the formation of a yellow precipitate of lead iodide, you need a compound that contains lead ions (Pb²⁺) and can react with potassium iodide (KI) to form the insoluble lead iodide (PbI₂) precipitate.

Among the options given:

A. Lead sulphate (PbSO₄) is insoluble and contains lead ions (Pb²⁺), but it will not react with potassium iodide to form lead iodide precipitate. So, it cannot be used as a replacement for lead nitrate in this reaction.

B. Lead acetate (Pb(C₂H₃O₂)₂) contains lead ions (Pb²⁺) and can react with potassium iodide to form lead iodide precipitate. Therefore, lead acetate can be used as a replacement for lead nitrate in the reaction.

C. Ammonium nitrate (NH₄NO₃) does not contain lead ions (Pb²⁺) and will not react with potassium iodide to form lead iodide precipitate. So, it cannot be used as a replacement for lead nitrate in this reaction.

D. Potassium sulphate (K₂SO₄) does not contain lead ions (Pb²⁺) and will not react with potassium iodide to form lead iodide precipitate. So, it cannot be used as a replacement for lead nitrate in this reaction.

Therefore, the correct answer is:

B. Lead acetate