Net Ionic Equations (Precipitation Rxns) & Spectator Ions

Which is the correct net ionic equation for this reaction:

AgNO_3(aq) + CaCl_2(aq) →

• Ca²⁺ + 2Cl^- → CaCl₂

• Ag⁺ + Cl^- → AgCl

• Ag + Cl → AgCl

• Ag⁺ + Ca²⁺ →Ag₂Ca

Which is the correct net ionic equation for this reaction:

Pb(NO₃)_2(aq) + 2KI_(aq) →

• Pb²⁺ + K⁺ --> PbK

• Pb²⁺ + I^- --> PbI₂

• 2I^- --> I₂

• Pb²⁺ + 2I^- --> PbI₂

Which is the correct net ionic equation for this reaction:

Na₂O_(aq) + AgNO_3(aq) -->

• Ag⁺ + NO₃^- --> AgNO₃

• Ag⁺ + O^-2 --> Ag₂O

• Na⁺ + NO₃^- --> NaNO₃

• 2Ag⁺ + O^-2 --> Ag₂O

Which of these results in the formation of a precipitate?

• AgNO₃(aq) + NaOH(aq)→

• LiNO₃(aq) + CaCl₂(aq)→

• NaNO₃(aq) + KOH(aq)→

• More than one of these form precipitates

What are the spectator ions in this reaction?

CuCl_2(aq) + 2NaOH_(aq) → Cu(OH)_2(s) + 2NaCl_(aq)

• Cu²⁺ and OH^-

• Na²⁺ and Cl^2-

• Na⁺ and Cl^-

• Na⁺ and OH^-