25 mL of acetone is present in 175 mL of its aqueous solution. The concentration of solution is.

Options

A. 0.1428
B. 0.25
C. 0.03
D. 0.1205

Answer

To find the concentration of the aqueous solution of acetone, we will use the formula for volume by volume (V/V) percentage concentration.

### Step-by-Step Solution:

1. **Identify the volumes**:
- Volume of acetone (solute) = 25 mL
- Total volume of the solution = 175 mL

2. **Use the V/V percentage formula**:
\[ \text{Concentration (V/V %)} = \left( \frac{\text{Volume of solute}}{\text{Total volume of solution}} \right) \times 100 \]

3. **Substitute the values into the formula**:
\[ \text{Concentration (V/V %)} = \left( \frac{25 \, \text{mL}}{175 \, \text{mL}} \right) \times 100 \]

4. **Calculate the fraction**:
\[ \frac{25}{175} = \frac{1}{7} \]

5. **Convert the fraction to a percentage**:
\[ \text{Concentration (V/V %)} = \left( \frac{1}{7} \right) \times 100 \approx 14.29\% \]

6. **Final result**:
The concentration of the solution is approximately **14.29%**.