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Define parts per million (PPM )

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Define parts per million (PPM )

Posted by Naveen Kumar 6 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 6 years, 9 months ago

Parts per million can be defined as the ratio of number of parts of the component to the total number of parts of all components of the solution multiplied by 106.
It is denoted by ppm.
It is used to express concentration of a solution where solute is present in trace For instance, concentration of pollutants in water or atmosphere is expressed in terms of g mL–1 or ppm.
Mathematically,

For example, let 0.0005g of NaCl be dissolved in 100mL of water then parts per million =

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