Which reaction is/are possible?

Options

A. `MgCl_(2)+NaNO_(3) to`
B. `BaSO_(4)+HCl to `
C. `ZnSO_(4)+BaS to `
D. `BaCO_(3)+CH_(3)COOH to `

Answer

To determine which reactions are possible among the given combinations of reactants, we will analyze each option step by step.

### Step 1: Analyze Magnesium Chloride and Sodium Nitrate
- **Reactants**: Magnesium Chloride (MgCl2) + Sodium Nitrate (NaNO3)
- **Analysis**: Magnesium Chloride is soluble in water, and Sodium Nitrate is also soluble. However, there is no significant reaction between these two compounds as they do not form any precipitate or gas.
- **Conclusion**: No reaction occurs.

### Step 2: Analyze Barium Sulfate and Hydrochloric Acid
- **Reactants**: Barium Sulfate (BaSO4) + Hydrochloric Acid (HCl)
- **Analysis**: Barium Sulfate is insoluble in water and does not react with hydrochloric acid. Therefore, there is no reaction.
- **Conclusion**: No reaction occurs.

### Step 3: Analyze Zinc Sulfate and Barium Sulfide
- **Reactants**: Zinc Sulfate (ZnSO4) + Barium Sulfide (BaS)
- **Analysis**: When these two react, they undergo a double displacement reaction, resulting in the formation of Zinc Sulfide (ZnS) and Barium Sulfate (BaSO4). Both products are insoluble in water and will precipitate out.
- **Conclusion**: Reaction occurs, producing ZnS and BaSO4.

### Step 4: Analyze Barium Carbonate and Acetic Acid
- **Reactants**: Barium Carbonate (BaCO3) + Acetic Acid (CH3COOH)
- **Analysis**: Barium Carbonate reacts with Acetic Acid to produce Barium Acetate (Ba(CH3COO)2), Carbon Dioxide (CO2), and Water (H2O). The reaction produces gas (CO2), indicating that it is a valid reaction.
- **Conclusion**: Reaction occurs, producing Ba(CH3COO)2, CO2, and H2O.

### Final Summary of Possible Reactions
- **Possible Reactions**:
- Zinc Sulfate + Barium Sulfide → ZnS + BaSO4
- Barium Carbonate + Acetic Acid → Ba(CH3COO)2 + CO2 + H2O
- **Not Possible Reactions**:
- Magnesium Chloride + Sodium Nitrate
- Barium Sulfate + Hydrochloric Acid

### Answer
The possible reactions are:
- Option C: Zinc Sulfate + Barium Sulfide
- Option D: Barium Carbonate + Acetic Acid