Answer:
Explanation:
The reaction of precipitation between NH₄Cl and Pb(NO₃)₂ is the following:
2NH₄Cl(aq) + Pb(NO₃)₂ → NH₄NO₃(aq) + PbCl₂(s)
The formed precipitate is PbCl₂ because it is an insoluble salt. The following ionic equation shows the spectator ions:
2NH₄⁺(aq) + 2Cl⁻(aq) + Pb²⁺(aq) + 2 NO₃⁻(aq) → 2NH₄⁺(aq) + 2NO₃⁻(aq) + PbCl₂(s)
The precipitate (PbCl₂) is formed by the Pb²⁺ ion and the Cl⁻ ion. Thus, the spectator ions are those which do not form the precipitate. In this case, they are: NH₄⁺ (ammonium ion) and NO₃⁻ (nitrate ion).
