This post gives information about the definition and formula of Atomic fraction, Volume Fraction, and Pressure Fraction.Â
Atomic fraction
The atomic fraction of an element in a mixture is the ratio of the number of atoms of that element in the mixture and the number of atoms of all the elements present in the mixture.Â
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Atomic fraction formulaÂ
Atomic fraction = Number of atoms of the component / total number of atoms of all the components in the mixtureÂ
Atomic %(percentage) of Composition = Atomic fraction ✖ 100
Volume Fraction
The volume fraction of a component in a mixture is the ratio of the defined partial volume (net component volume) of that component to the total volume of the mixture.
The formula of Volume Fraction
Volume Fraction = Partial Volume/Total VolumeÂ
Volume percentage (%) of Composition = Volume Fraction * 100
Pressure Fraction
The pressure fraction of a gas present in a gasses mixture is the ratio of the partial pressure of that gas to the total pressure of the gasses mixture.
The formula of Pressure Fraction
Pressure fraction = Partial pressure of gases/Total pressure of the gasÂ
Pressure percentage (%) of Composition = 100 x Pressure fraction
What are molarity and normality?
MolarityÂ
The number of moles of a substance present in 1 liter of a solution is called the molarity of the solution.Â
NormalityÂ
The number of gram equivalents present in 1 liter of a solution is called the normality of that solution.Â
Normality (N) = Number of gram equivalents of substance/volume of solution in liters.
Also Read: What are Reactants in Chemistry
