Net Ionic Equation for Displacement Reaction

Steps:

• Identify the reaction: Copper displaces silver ions from silver nitrate solution as copper is more reactive.
• Write the molecular equation: Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s).
• Remove spectator ions: Nitrate ions (NO3-) do not participate.
• Obtain net ionic equation: Cu(s) + 2Ag+(aq) → Cu2+(aq) + 2Ag(s), balanced for charge and atoms.

Why B is correct:

• It represents the balanced net ionic equation, focusing only on reacting species per ionic equation definition.

Why the others are wrong:

• A: Unbalanced charges and atoms; includes electron, resembling a half-reaction.
• C: Full molecular equation, includes spectator nitrate ions.
• D: Incorrect direction; copper(II) ions cannot displace silver metal.

Final answer: B