1000 g calcium carbonate solution contains 10 g carbonate. The concentration of solution is:

10,000 ppm

The correct answer is option 4. 10,000 ppm.

To find the concentration of the calcium carbonate solution, we need to determine the mass of the solute (carbonate) and then express it as parts per million (ppm) relative to the total mass of the solution.

Given:

Mass of calcium carbonate solution = 1000 g

Mass of carbonate (solute) = 10 g

The concentration in ppm (parts per million) can be calculated using the formula:\[ \text{Concentration (ppm)} = \frac{\text{Mass of solute (g)}}{\text{Total mass of solution (g)}} \times 10^6 \]

Substituting the given values:

\[ \text{Concentration (ppm)} = \frac{10 \, \text{g}}{1000 \, \text{g}} \times 10^6 = 10,000 \, \text{ppm} \]

Therefore, the concentration of the solution is (4) 10,000 ppm