If silver nitrate solution is added to a salt solution then a yellow precipitate is obtained, the salt may containBr–I–Cl–F–

When a silver nitrate solution is added to a salt solution and a yellow precipitate is obtained, it indicates the presence of iodide ions (I–) in the salt solution. Here's the step-by-step explanation:

1. Silver nitrate (AgNO3) is a common reagent used in qualitative inorganic analysis to test for the presence of halide ions (Cl–, Br–, I–, F–).

2. When silver nitrate solution is added to a solution containing halide ions, a precipitate of silver halide is formed. The color of the precipitate can help identify which halide ion is present.

3. The color of the precipitate formed with each halide ion is different:

   • Silver chloride (AgCl) forms a white precipitate
   • Silver bromide (AgBr) forms a cream precipitate
   • Silver iodide (AgI) forms a yellow precipitate
   • Silver fluoride (AgF) is soluble and does not form a precipitate

4. Therefore, if a yellow precipitate is obtained when silver nitrate solution is added to the salt solution, it indicates that the salt contains iodide ions (I–).