Combining Na2CO3 and BaCl2 solutions will produce

Combining Na2CO3 and BaCl2 solutions will produce

Group of answer choices

NaCl(aq) and BaCO3(s) — cloudy solution

NaCl(aq) and BaCO3(aq) — No visible reaction

NaBa(aq) and ClCO3(aq) — No visible reaction

NaBa(aq) and ClCO3(s) — cloudy solution

The correct answer and explanation is :

The correct answer is:

NaCl(aq) and BaCO3(s) — cloudy solution.

Explanation:

When you mix aqueous solutions of sodium carbonate (Na₂CO₃) and barium chloride (BaCl₂), a precipitation reaction occurs. To understand this in detail, we need to consider the possible ions formed in solution and their solubility rules.

1. Dissociation of Na₂CO₃:
   Sodium carbonate (Na₂CO₃) dissociates in water to form sodium ions (Na⁺) and carbonate ions (CO₃²⁻):
   [
   \text{Na₂CO₃ (aq)} \rightarrow 2\text{Na}^+ (\text{aq}) + \text{CO₃}^{2-} (\text{aq})
   ]
2. Dissociation of BaCl₂:
   Barium chloride (BaCl₂) dissociates in water to form barium ions (Ba²⁺) and chloride ions (Cl⁻):
   [
   \text{BaCl₂ (aq)} \rightarrow \text{Ba}^{2+} (\text{aq}) + 2\text{Cl}^-(\text{aq})
   ]
3. Formation of Products:
   When these two solutions are combined, the ions present in the solution can interact and form new compounds. The possible combinations are:

• Na⁺ and Cl⁻: This forms sodium chloride (NaCl), which is a highly soluble salt in water. Therefore, NaCl stays dissolved in the solution.
• Ba²⁺ and CO₃²⁻: This forms barium carbonate (BaCO₃), which is insoluble in water. According to solubility rules, barium carbonate is classified as an insoluble salt and will precipitate out of the solution as a solid.

1. Resulting Reaction:
   The overall reaction in aqueous solution can be written as:
   [
   \text{Ba}^{2+} (\text{aq}) + \text{CO₃}^{2-} (\text{aq}) \rightarrow \text{BaCO₃ (s)}
   ]
   The barium carbonate forms a white precipitate in the solution, which causes the cloudy appearance.
2. Conclusion:
   As a result, the combination of Na₂CO₃ and BaCl₂ produces NaCl(aq), which remains dissolved, and BaCO₃(s), which precipitates out as a solid, causing the solution to become cloudy. Hence, the correct answer is NaCl(aq) and BaCO₃(s) — cloudy solution.