CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

500g tooth paste sample has 0.2g fluoride ion concentration. What is the concentration of fluoride in terms of ppm level ? 


Solution

PPM or Parts Per Million is expressed as $$1$$ milligram of substance per kilogram of parent substance

Since, mass of toothpaste$$=500\ g=0.5\ kg$$, and
Mass of fluoride ion$$=0.2\ g=200\ mg$$

$$0.5\ kg$$ toothpaste contains $$200\ mg$$ fluoride ions, 
$$1\ kg$$ toothpaste will contain $$200\times 2=400\ mg$$ fluoride ions

Hence, concentration of fluoride ion is 400 ppm

Chemistry

Suggest Corrections
thumbs-up
 
0


similar_icon
Similar questions
View More


similar_icon
People also searched for
View More



footer-image