Final answer:
The net ionic equation for the reaction between sodium chloride and sodium carbonate involves spectator ions.
Step-by-step explanation:
The net ionic equation for the reaction between sodium chloride and sodium carbonate is as follows:
NaCl(aq) + Na2CO3(aq) → 2NaCl(aq) + CO2(g)
In this equation, there are no spectator ions present because all ions that are present in the reactants are involved in the formation of products. However, this equation does not involve the formation of a precipitate or the release of heat, so options B and D can be eliminated. The equation does not produce gas, so option C can also be eliminated.
Therefore, the correct answer is A, which states that the net ionic equation involves spectator ions.