Question

$1000g$ aqueous solution of $CaC{O}_3$ contains $10g$ of calcium carbonate. Concentration of solution is:

• A. 10 ppm
• B. 100 ppm
• C. 1000 ppm
• D. 10000 ppm

Answer 1

Answer: (D)

$ppm=wt$. of solute in $10^{6}g{H}_{2}O$
$10^{3}g{H}_{2}O$ contains $10gCaC{O}_3$
$\therefore 10^{6}g{H}_{2}O$ contains $=\frac{10\times 10^6}{10^3}=10,000$
$ppmCaC{O}_3$