This document contains the solutions to a group discussion question about predicting precipitation reactions and writing balanced and net ionic equations. The reactions are: A. Lead(II) nitrate and ammonium sulfide forming lead sulfide precipitate. B. Iron(II) sulfate and silver nitrate forming silver sulfate precipitate and iron(II) nitrate. C. Copper(II) chloride and sodium hydroxide forming copper(II) hydroxide precipitate and sodium chloride. D. Potassium iodide and lead(II) nitrate forming lead iodide precipitate and potassium nitrate. The document shows the balanced chemical equations and net ionic

1. G.C. 1-3 GROUP DISCUSSION QUESTIONS 1. Based on the solubility guidelines predict the
outcome of the following reactions. If you think a precipi r, balance the reaction equation and
write the complete and net ionic equations of the reaction. (You must show states of the reactants
and products) A. Pb(NO,) (aq)+(NH)S (ag)- B. FeSO,(aq)+AgNO, (aq)- C. CuCl, (aq)+ NaOH
(aq)- D. KI (aq) + Pb(NO)2 (aq)
Solution
A. Pb(NO3)2(aq) + (NH4)2S (aq) -----------> PbS(s) + 2NH4NO3(aq)
Pb^2+ (aq) +2(NO3)^-(aq) + 2(NH4)^+ (aq) +S^2- (aq) -----------> PbS(s) + 2NH4^+(aq)
+2NO3^-(aq)
Removal of spectaror ions to get net ionic equation
Pb^2+ (aq) +S^2- (aq) -----------> PbS(s) net ionic equation
B. FeSo4(aq) + 2AgNO3(aq) ----------> Ag2So4(s) + Fe(NO3)2(aq)
Fe^2+(aq) +So4^2-(aq) + 2Ag^+(aq) +2NO3^-(aq) ----------> Ag2So4(s) + Fe^2+(aq)
+2(NO3)^-(aq)
Removal of spectaror ions to get net ionic equation
2Ag^+(aq) +2NO3^-(aq) ----------> Ag2So4(s) net ioionic equation
C.
CuCl2(aq) + 2NaOH(aq) -----------> Cu(OH)2(s) + 2NaCl(aq)
Cu^2+(aq) +2Cl^-(aq) + 2Na^+(aq) +2OH^-(aq) -----------> Cu(OH)2(s) + 2Na^+(aq) +2Cl^-
(aq)
Removal of spectaror ions to get net ionic equation
Cu^2+(aq) +2OH^-(aq) -----------> Cu(OH)2(s) net ionic equation
D.
2KI(aq) + Pb(NO3)2(aq) ----------> PbI2(s) + 2KNO3(aq)
2K^+(aq) +2I^-(aq) + Pb^2+(aq) +2(NO3)^-(aq) ----------> PbI2(s) + 2K^+(aq) +2NO3^-(aq)
Removal of spectaror ions to get net ionic equation
2I^-(aq) + Pb^2+(aq) ----------> PbI2(s) net ionic equation