Question

Write the net ionic equation. An aqueous solution of sodium carbonate is added to an aqueous solution of calcium chloride. Calcium carbonate is precipitated

Answer 1

The net ionic equation for the reaction of a sodium carbonate solution with calcium chloride solution is Ca²⁺(aq) + CO₃²⁺(aq) → CaCO₃(s), showing the formation of solid calcium carbonate.

Step-by-step explanation:

Writing the Net Ionic Equation

When an aqueous solution of sodium carbonate is added to an aqueous solution of calcium chloride, a precipitation reaction occurs resulting in the formation of calcium carbonate solid. The net ionic equation focuses on the ions that undergo a chemical change. Calcium carbonate is insoluble in water and precipitates out of the solution.

To write the net ionic equation, we first write the complete ionic equation:

Ca2+(aq) + 2Cl-(aq) + 2Na+(aq) + CO32-(aq) → CaCO3(s) + 2Na+(aq) + 2Cl-(aq)

Now, we can cancel out the spectator ions (ions that do not participate in the formation of the precipitate) to get the net ionic equation:

Ca2+(aq) + CO32-(aq) → CaCO3(s)

This equation shows that calcium ions (Ca2+) and carbonate ions (CO32-) combine to form solid calcium carbonate.

Answer 2

Ca + CO₃²⁻ → CaCO₃

Step-by-step explanation:

Solution:

Sodium carbonate = Na₂CO₃

Calcium chloride = CaCl₂

Calcium carbonate is precipitated

Reaction equation:

Na₂CO₃ + CaCl₂ → CaCO₃ + 2NaCl

The net ionic equation:

2Na⁺ + CO₃²⁻ + Ca + 2Cl⁻ → CaCO₃ + 2Na⁺ + Cl⁻

the spectator ions which both appears on both sides will cancel out and leave behind the net ionic equation:

Ca + CO₃²⁻ → CaCO₃