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Q.
$1000\, g$ aqueous solution of $CaCO _{3}$ contains $10\, g$ of calcium carbonate. Concentration of solution is:
Some Basic Concepts of Chemistry
Solution:
$ppm = wt$. of solute in $10^{6} g H _{2} O$
$10^{3} g H _{2} O$ contains $10 g CaCO _{3}$
$\therefore 10^{6} g H _{2} O$ contains $=\frac{10 \times 10^{6}}{10^{3}}=10,000$
$ppm CaCO _{3}$