Determine net ionic equations, if any, occurring when aqueous solutions of the following reactants are mixed

Determine net ionic equations, if any, occurring when aqueous solutions of the following reactants are mixed. Select “True” or “False” to indicate whether or not the stated reaction (or “no reaction”) correctly corresponds to the expected observation in each case. Calcium acetate and sodium carbonate; Ca2+(aq) + 2C2H3O2-(aq) –> Ca(C2H3O2)2(s) Ammonium sulfate and barium nitrate; No reaction occurs. Sodium phosphate and potassium nitrate; 2Na+(aq) + NO3-(aq) –> Na2NO3(s) Copper(II) sulfate and ammonium carbonate; No reaction occurs. Magnesium chloride and sodium hydroxide; No reaction occurs.

The Correct Answer and Explanation is:

Here are the correct determinations for each reaction and whether the given statement is True or False:

1. Calcium acetate and sodium carbonate
   Given Reaction: Ca²⁺(aq) + 2C₂H₃O₂⁻(aq) → Ca(C₂H₃O₂)₂(s)
   Correct Answer: False
   Explanation: This reaction incorrectly predicts a precipitate of calcium acetate. However, calcium acetate is soluble in water, so it remains in solution. The actual reaction involves calcium ions (Ca²⁺) and carbonate ions (CO₃²⁻) forming calcium carbonate (CaCO₃), which is insoluble and precipitates. The correct net ionic equation is:
   Ca²⁺(aq) + CO₃²⁻(aq) → CaCO₃(s)

2. Ammonium sulfate and barium nitrate
   Given Reaction: No reaction occurs
   Correct Answer: False
   Explanation: This is incorrect because a reaction does occur. Barium sulfate (BaSO₄) is insoluble in water and forms a white precipitate. The correct net ionic equation is:
   Ba²⁺(aq) + SO₄²⁻(aq) → BaSO₄(s)

3. Sodium phosphate and potassium nitrate
   Given Reaction: 2Na⁺(aq) + NO₃⁻(aq) → Na₂NO₃(s)
   Correct Answer: False
   Explanation: Both sodium phosphate and potassium nitrate are soluble in water and contain only spectator ions. No reaction or precipitate forms. Therefore, no net ionic equation exists. The claim that sodium nitrate (Na₂NO₃) precipitates is incorrect because it is highly soluble.

4. Copper(II) sulfate and ammonium carbonate
   Given Reaction: No reaction occurs
   Correct Answer: False
   Explanation: This is incorrect. A reaction occurs in which copper(II) carbonate (CuCO₃) forms as a precipitate, since it is insoluble. The correct net ionic equation is:
   Cu²⁺(aq) + CO₃²⁻(aq) → CuCO₃(s)

5. Magnesium chloride and sodium hydroxide
   Given Reaction: No reaction occurs
   Correct Answer: False
   Explanation: A reaction occurs between magnesium ions (Mg²⁺) and hydroxide ions (OH⁻), forming magnesium hydroxide (Mg(OH)₂), which is insoluble. The correct net ionic equation is:
   Mg²⁺(aq) + 2OH⁻(aq) → Mg(OH)₂(s)

Summary of Truth Values:

1. False
2. False
3. False
4. False
5. False

All five stated reactions are incorrect; a precipitate or net ionic equation does exist in each case contrary to what was given.