What products are expected from the reaction between colemanite powder and sodium carbonate solution, when they are heated?

Options

A. `CaCO_(3)`
B. `Na_(2)B_(4)O_(7)`
C. `NaBO_(2)`
D. `CaO`

Explanation

To determine the products expected from the reaction between colemanite powder (Ca2B6O11) and sodium carbonate (Na2CO3) when heated, we can follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are:
- Colemanite powder: Ca2B6O11
- Sodium carbonate: Na2CO3

### Step 2: Write the Chemical Equation
When colemanite reacts with sodium carbonate, the reaction can be represented as follows:
\[ \text{Ca}_2\text{B}_6\text{O}_{11} + \text{Na}_2\text{CO}_3 \rightarrow \text{CaCO}_3 + \text{Na}_2\text{B}_4\text{O}_7 + \text{NaBO}_2 \]

### Step 3: Identify the Products
From the reaction, the products formed are:
1. Calcium carbonate (CaCO3) - This will precipitate out of the solution.
2. Sodium tetraborate (Na2B4O7) - Also known as borax.
3. Sodium metaborate (NaBO2).

### Step 4: Conclusion
Thus, the expected products from the reaction between colemanite powder and sodium carbonate solution when heated are:
- Calcium carbonate (CaCO3)
- Sodium tetraborate (Na2B4O7)
- Sodium metaborate (NaBO2)

### Final Answer
The products expected from the reaction are:
- CaCO3 (Calcium carbonate)
- Na2B4O7 (Sodium tetraborate or borax)
- NaBO2 (Sodium metaborate)