A mixture of sodium oxide and calcium oxide are dissolved in water and saturated with excess carbon dioxide gas. The resulting solution is ......... It contains :

Options

A. basic, NaOH and `Ca(OH)_(2)`
B. neutral, `Na_(2)CO_(3)` and `CaCO_(3)`
C. basic, `Na_(2)CO_(3)` and `CaCO_(3)`
D. acidic, NaOH and `CaCO_(3)`

Explanation

To solve the question regarding the resulting solution from a mixture of sodium oxide and calcium oxide dissolved in water and saturated with excess carbon dioxide gas, we can follow these steps:

### Step 1: Dissolving Sodium Oxide and Calcium Oxide in Water
- **Sodium Oxide (Na2O)** reacts with water to form sodium hydroxide (NaOH):
\[ \text{Na}_2\text{O} + \text{H}_2\text{O} \rightarrow 2 \text{NaOH} \]
- **Calcium Oxide (CaO)** reacts with water to form calcium hydroxide (Ca(OH)2):
\[ \text{CaO} + \text{H}_2\text{O} \rightarrow \text{Ca(OH)}_2 \]

### Step 2: Nature of the Solutions
- Both sodium hydroxide and calcium hydroxide are strong bases. Therefore, the resulting solutions from these oxides are basic in nature.

### Step 3: Reaction with Carbon Dioxide
- When excess carbon dioxide (CO2) is bubbled through the sodium hydroxide solution, it reacts to form sodium carbonate (Na2CO3):
\[ 2 \text{NaOH} + \text{CO}_2 \rightarrow \text{Na}_2\text{CO}_3 + \text{H}_2\text{O} \]
- Similarly, when carbon dioxide reacts with calcium hydroxide, it forms calcium carbonate (CaCO3):
\[ \text{Ca(OH)}_2 + \text{CO}_2 \rightarrow \text{CaCO}_3 + \text{H}_2\text{O} \]

### Step 4: Analyzing the Resulting Solution
- The resulting solution contains sodium carbonate (Na2CO3) and calcium carbonate (CaCO3).
- Sodium carbonate is a salt formed from a strong base (NaOH) and a weak acid (H2CO3), making it a basic salt.
- Calcium carbonate is also a salt formed from a strong base (Ca(OH)2) and a weak acid (H2CO3), which also makes it a basic salt.

### Conclusion
- The resulting solution from the mixture of sodium oxide and calcium oxide dissolved in water and saturated with excess carbon dioxide contains sodium carbonate and calcium carbonate, both of which are basic salts. Therefore, the resulting solution is basic in nature.

### Final Answer
The resulting solution is basic and contains sodium carbonate (Na2CO3) and calcium carbonate (CaCO3).

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