Chemical Reactions and Equations

Problem 1: Net Ionic Reaction

• Balanced Molecular Equation:
  2 ext{AgNO}3 (aq) + ext{K}2 ext{SO}4 (aq) \rightarrow 2 ext{KNO}3 (aq) + ext{Ag}2 ext{SO}4 (s)
• Net Ionic Equation:
  2 ext{Ag}^+ (aq) + ext{SO}4^{2-} (aq) \rightarrow ext{Ag}2 ext{SO}_4 (s)

Problem 2: Spectator Ions

• Balanced Molecular Equation:
  2 ext{AgNO}3 (aq) + ext{K}2 ext{SO}4 (aq) \rightarrow 2 ext{KNO}3 (aq) + ext{Ag}2 ext{SO}4 (s)
• Spectator Ions:
  • Potassium ions ext{K}^+ (aq)
  • Nitrate ions ext{NO}_3^{-} (aq)

Problem 3: Complete Ionic Equation for Barium Chloride and Ammonium Carbonate

• Reaction: Aqueous Barium chloride reacts with aqueous ammonium carbonate, forming a white precipitate.
• Complete Ionic Equation:
  ext{Ba}^{2+} (aq) + 2 ext{Cl}^{-} (aq) + 2 ext{NH}4^{+} (aq) + ext{CO}3^{2-} (aq) \rightarrow ext{BaCO}3 (s) + 2 ext{Cl}^{-} (aq) + 2 ext{NH}4^{+} (aq)

Problem 4: Fizzing in Barium Carbonate and Hydrochloric Acid Reaction

• Reaction: Aqueous Barium carbonate reacts with aqueous hydrochloric acid.
• Observation: The solution fizzes vigorously.
• Cause of Fizzing: Resulting gas evolution from the reaction.

Problem 5: Molecular and Net Ionic Equations for Hydrochloric Acid and Barium Carbonate

• Molecular Equation:
  ext{BaCO}3 (s) + 2 ext{HCl} (aq) \rightarrow ext{BaCl}2 (aq) + ext{H}2 ext{O} (l) + ext{CO}2 (g)
• Net Ionic Equation:
  ext{BaCO}3 (s) + 2 ext{H}^+ (aq) \rightarrow ext{Ba}^{2+} (aq) + ext{H}2 ext{O} (l) + ext{CO}_2 (g)