1) Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients.
A precipitate forms when aqueous solutions of calcium iodide and silver(I) nitrate are combined.
*Use (aq), (l), etc
2) Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients.
A precipitate forms when aqueous solutions of nickel(II) iodide and potassium hydroxide are combined.
3) Consider the reaction when aqueous solutions of barium chloride and iron(II) sulfate are combined. The net ionic equation for this reaction is:
4) Consider the reaction when aqueous solutions of copper(II) bromide and sodium sulfide are combined. The net ionic equation for this reaction is:
5) Write a net ionic equation for the reaction that occurs when cobalt(II) carbonate (s) and excess nitric acid (aq) are combined.
6) Write a net ionic equation for the reaction that occurs when excess hydrochloric acid (aq) and potassium sulfide are combined.
Solution
1.  CaI2(aq) + 2AgNO3(aq) ----------------> 2AgI(s) + Ca(NO3)2(aq)
2. NiI2(aq) + 2KOH(aq) -------------> Ni(OH)2(s) + 2KI(aq)
3.BaCl2(aq) + FeSo4(aq) ------------------> BaSO4(s) + FeCl2(aq)
Ba^2+ (aq) +2Cl^-(aq) + Fe^2+ (aq) +So4^2-(aq) ------------------> BaSO4(s) + Fe^2+ (aq) + 2Cl^-(aq)
Removal of spectator ions to get net ionic equation
Ba^2+ (aq) +So4^2-(aq) ------------------> BaSO4(s)Â Â Â net ionic equation
4. CuBr2(aq) + Na2S(aq) -----------------> CuS(S) + 2NaBr(aq)
Cu^2+ (aq) + 2Br^-(aq) + 2Na^+(aq) +S^2-(aq) -----------------> CuS(S) + 2Na^+(aq) + 2Br^-(aq)
Removal of spectator ions toget net ionic equation
Cu^2+ (aq) +S^2-(aq) -----------------> CuS(S)Â Â net ionic equation
5.  CoCO3(s) + 2HNO3(aq) ------------> Co(NO3)2(aq) + H2CO3
CoCO3(s) + 2H^+(aq) +2NO3^-(aq) ------------> Co^2+ (aq) + 2(NO3)^-(aq) + 2H^+ (aq) + CO3^2-
CoCO3(s) ------------> Co^2+ (aq) +CO3^2-Â Â net ionic equation
6. 2HCl(aq) + K2S(aq) --------------> H2S(g) + 2KCl(aq)
2H^+ (aq) + 2Cl^-(aq) + 2K^+ (aq) + S^2-(aq) --------------> H2S(g) + 2K^+ (aq) + 2Cl^-(aq)
Removal of spectetor ions toget net ionic equation
2H^+ (aq) + S^2-(aq) --------------> H2S(g)Â Â net ionic equation
.
HMCS Max Bernays Pre-Deployment Brief (May 2024).pptx
1) Write a balanced equation for the double-replacement precipitation.docx
1. 1) Write a balanced equation for the double-replacement precipitation reaction described,
using the smallest possible integer coefficients.
A precipitate forms when aqueous solutions of calcium iodide and silver(I) nitrate are
combined.
*Use (aq), (l), etc
2) Write a balanced equation for the double-replacement precipitation reaction described,
using the smallest possible integer coefficients.
A precipitate forms when aqueous solutions of nickel(II) iodide and potassium hydroxide are
combined.
3) Consider the reaction when aqueous solutions of barium chloride and iron(II) sulfate are
combined. The net ionic equation for this reaction is:
4) Consider the reaction when aqueous solutions of copper(II) bromide and sodium sulfide are
combined. The net ionic equation for this reaction is:
5) Write a net ionic equation for the reaction that occurs when cobalt(II) carbonate (s) and
excess nitric acid (aq) are combined.
6) Write a net ionic equation for the reaction that occurs when excess hydrochloric acid (aq)
and potassium sulfide are combined.
Solution
1.  CaI2(aq) + 2AgNO3(aq) ----------------> 2AgI(s) + Ca(NO3)2(aq)
2. NiI2(aq) + 2KOH(aq) -------------> Ni(OH)2(s) + 2KI(aq)
3.BaCl2(aq) + FeSo4(aq) ------------------> BaSO4(s) + FeCl2(aq)
Ba^2+ (aq) +2Cl^-(aq) + Fe^2+ (aq) +So4^2-(aq) ------------------> BaSO4(s) + Fe^2+ (aq) +
2Cl^-(aq)
2. Removal of spectator ions to get net ionic equation
Ba^2+ (aq) +So4^2-(aq) ------------------> BaSO4(s)Â Â Â net ionic equation
4. CuBr2(aq) + Na2S(aq) -----------------> CuS(S) + 2NaBr(aq)
Cu^2+ (aq) + 2Br^-(aq) + 2Na^+(aq) +S^2-(aq) -----------------> CuS(S) + 2Na^+(aq) + 2Br^-
(aq)
Removal of spectator ions toget net ionic equation
Cu^2+ (aq) +S^2-(aq) -----------------> CuS(S)Â Â net ionic equation
5.  CoCO3(s) + 2HNO3(aq) ------------> Co(NO3)2(aq) + H2CO3
CoCO3(s) + 2H^+(aq) +2NO3^-(aq) ------------> Co^2+ (aq) + 2(NO3)^-(aq) + 2H^+ (aq) +
CO3^2-
CoCO3(s) ------------> Co^2+ (aq) +CO3^2-Â Â net ionic equation
6. 2HCl(aq) + K2S(aq) --------------> H2S(g) + 2KCl(aq)
2H^+ (aq) + 2Cl^-(aq) + 2K^+ (aq) + S^2-(aq) --------------> H2S(g) + 2K^+ (aq) + 2Cl^-(aq)
Removal of spectetor ions toget net ionic equation
2H^+ (aq) + S^2-(aq) --------------> H2S(g)Â Â net ionic equation
