Question

Define Formality and ppm(parts per million) ??​

Answer 1

Explanation:

Concentration in ppm (parts per million) – “It is equal to the number of milligrams of the solute present in one liter of solution .” concentration in ppm =weight of solute (mg. )/ volume of solution (l)

Answer 2

FORMALITY :-

=> It is define as no of mole of ion dissolve in per litre solution.

=> it is temperature dependent.

=> It is also known as molarity of ion.

$formality = \frac{no \: of \: mole \: of \: ion}{vol \: of \: solution(in \: lit)}$

=>

$\frac{weight \: of \: ion \: \times 1000}{formula \: mass \times vol(in \: ml)}$

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PPM( parts per million ) :-

=> It is defined as the amount of solute( in gm ) dissolved per 10^6 gm of solution.

$ppm = \frac{wt \: of \: solute}{wt \: of \: solution} \times {10}^{6}$

=> The volume of solute dissolve per 10^6 ml of solution.

$ppm = \frac{vol \: of \: solute}{vol \: of \: solution} \times {10}^{6}$

=> The concentration term is use only when amount of solute is very less.

=> It is used to determine the water pollution, air pollution.

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