The balanced net ionic equation for precipitation of CaCO₃when aqueous solutions of Na₂CO₃ and CaCl₂are mixed is . A) Na⁺(aq) + Cl^-(aq) - NaCl (aq) B) 2Na⁺(aq) + CO₃²^-(aq) -Na₂CO₃(aq) C) Ca²⁺(aq) + CO₃²^-(aq) - CaCO₃(s) D) Na₂CO₃(aq) + CaCl₂(aq) - 2NaCl (aq) + CaCO₃(s) E) 2Na⁺(aq) + 2Cl^-(aq) - 2NaCl (aq)

Question

Quizplus · Accepted Answer

The net ionic equation should only include the ions that participate in the reaction and their charges, and should be balanced in terms of atoms and charges. The balanced net ionic equation for the given precipitation reaction is:

Ca2+(aq) + CO32-(aq) + 2S2-(aq) → CaCO3(s) + S2-(aq)

This equation can be simplified by cancelling out the spectator ions (ions that do not participate in the reaction and remain in their original state), which in this case are Na+ and Cl-. The condensed net ionic equation becomes:

Ca2+(aq) + CO32-(aq) → CaCO3(s)

This equation is already balanced in terms of atoms and charges, and choice C matches this equation.

The Balanced Net Ionic Equation for Precipitation of CaCO3 when

The Balanced Net Ionic Equation for Precipitation of CaCO₃when