If HCl were added to a solution containing lead(II) ions, sodium ions, nickel(II) ions, and potassium ions, which ions would precipitate? (Select all that apply.)
lead ions
nickel ions
potassium ions
sodium ions
none of them

Question

If HCl were added to a solution containing lead(II) ions, sodium ions, nickel(II) ions, and potassium ions, which ions would precipitate? (Select all that apply.)
lead ions
nickel ions
potassium ions
sodium ions
none of them

anonymous · Answer

i think this question is from systematic identification of ions.
HCl is a group I reagent

so you just need to know, which ions get precipitated on addition of HCl.

i think lead is the one