Question

What is the concentration of solution in ppm when $5.0\times {10}^{-5}gmC{O}_2$ is dissolved in $100ml$ solution.

• A. $5$
• B. $500$
• C. $0.5$
• D. $5.0\times {10}^{-5}$

Answer 1

The correct option is C $0.5$

Concentration in ppm is defined as :

It is the ratio of the number of grams of solute for every one million grams of solution

ppm$=\frac{gramsofsolute}{gramofsolution}\times {10}^6$

$=\frac{5.0\times {10}^{-5}}{100}\times {10}^6=0.5$ ppm

option C is correct