Hg₂Cl₂ and possibly some AgCl precipitate, but PbCl₂ remains dissolved.
If you have two cations, you calculate the required concentration of the added anion for both. The cation that requires the smaller concentration of the added anion will precipitate first. For example, if adding cap I raised to the negative power to a mix of cap C u raised to the positive power cap P b raised to the 2 plus power cap C u cap I starts precipitating at cap P b cap I sub 2 starts precipitating at cap C u cap I fractional precipitation pogil answer key
(or the one that requires the lowest concentration of the added ion) will usually precipitate Step 2: Calculating the Reagent Concentration Needed Hg₂Cl₂ and possibly some AgCl precipitate, but PbCl₂