Question

Assuming all of the metal ions are from nitrate compounds (ie Pb(NO3)2 aq)

what would be the balanced overall equation and the net ionic equation for the reactions occurring when HCl is added to each of the metal solutions.

(3 overall equations and 3 NIEs)

Thank you

Answer 1

Let assume three metal ions such as Cu2+, Zn2+ and Pb2+ are from nitrate compounds like Cu(NO3)2, Zn(NO3)2 and Pb(NO3)2, respectively.

The Overall reaction of Cu(NO₃)₂ with HCl is

Cu(NO₃)₂ (aq) + 2HCl (aq)= CuCl₂ (s) + 2HNO3 (aq)

The Net ionic reaction of Cu(NO3)2 with HCl is

Cu²⁺ + NO_3^2- + 2H⁺ + 2Cl^- = CuCl₂ (s) + 2H⁺ + NO₃^2-

Cu²⁺ + 2Cl^- = CuCl₂ (s)

The Overall reaction of Zn(NO3)2 with HCl is

Zn(NO₃)₂ (aq) + 2HCl (aq)= ZnCl₂ (s) + 2HNO3 (aq)

The Net ionic reaction of Zn(NO3)2 with HCl is

Zn²⁺ + NO_3^2- + 2H⁺ + 2Cl^- = ZnCl₂ (s) + 2H⁺ + NO₃^2-

Zn²⁺ +  2Cl^- = ZnCl₂ (s)

The Overall reaction of Pb(NO3)2 with HCl is

Pb(NO₃)₂ (aq) + 2HCl (aq)= PbCl₂ (s) + 2HNO3 (aq)

The Net ionic reaction of Pb(NO3)2 with HCl is

Pb²⁺ + NO_3^2- + 2H⁺ + 2Cl^- = PbCl₂ (s) + 2H⁺ + NO₃^2-

Pb²⁺ +  2Cl^- = PbCl₂ (s)