Question

1000 g aqueous solution of CaCO₃ contains 10 g of calcium carbonate. Concentration of the solution is ______.

विकल्प

• 10 ppm

• 100 ppm

• 1000 ppm

• 10000 ppm

Answer 1

1000 g aqueous solution of CaCO₃ contains 10 g of calcium carbonate. Concentration of the solution is 10000 ppm.

Explanation:

Mass of solution = 1000 g

Mass of CaCO₃ (solute) = 10 g

Hardness or Concentration (ppm) = `"mass of solute"/"mass of solution" xx 10^6`

= `10/1000 xx 10^6`

= 10000 ppm