Multiple Choice
What is the net ionic equation for the reaction between aqueous sodium chloride and aqueous silver nitrate?
6. Chemical Quantities & Aqueous Reactions
Complete Ionic Equations
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Which of the following represents the complete ionic equation for the reaction between Pb(NO3)2(aq) and KOH(aq)?
A
Pb^2+(aq) + NO3^-(aq) + K^+(aq) + OH^-(aq) → Pb(OH)2(s) + K^+(aq) + NO3^-(aq)
B
Pb^2+(aq) + 2OH^-(aq) → Pb(OH)2(s)
C
Pb^2+(aq) + 2NO3^-(aq) + 2K^+(aq) + 2OH^-(aq) → Pb(OH)2(s) + 2K^+(aq) + 2NO3^-(aq)
D
Pb(NO3)2(aq) + 2KOH(aq) → Pb(OH)2(s) + 2KNO3(aq)
Verified step by step guidance1
Identify the reactants and products in the molecular equation: Pb(NO3)2(aq) + 2KOH(aq) → Pb(OH)2(s) + 2KNO3(aq).
Write the dissociation of each aqueous compound into its ions: Pb(NO3)2(aq) dissociates into Pb^2+(aq) and 2NO3^-(aq); KOH(aq) dissociates into K^+(aq) and OH^-(aq).
Write the complete ionic equation by replacing each aqueous compound with its dissociated ions: Pb^2+(aq) + 2NO3^-(aq) + 2K^+(aq) + 2OH^-(aq) → Pb(OH)2(s) + 2K^+(aq) + 2NO3^-(aq).
Identify the spectator ions, which are ions that appear on both sides of the equation and do not participate in the reaction: K^+(aq) and NO3^-(aq).
Write the net ionic equation by removing the spectator ions from the complete ionic equation: Pb^2+(aq) + 2OH^-(aq) → Pb(OH)2(s).
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