Explanation:
In chemistry, the mole fraction or molar fraction is defined as unit of the amount of a constituent, nᵢ divided by the total amount of all constituents in a mixture, nₜₒₜ:This expression is given below:-
{\displaystyle x_{i}={\frac {n_{i}}{n_{\mathrm {tot} }}}}{\displaystyle x_{i}={\frac {n_{i}}{n_{\mathrm {tot} }}}}
The sum of all the mole fractions is equal to 1:
{\displaystyle \sum _{i=1}^{N}n_{i}=n_{\mathrm {tot} };\;\sum _{i=1}^{N}x_{i}=1}{\displaystyle \sum _{i=1}^{N}n_{i}=n_{\mathrm {tot} };\;\sum _{i=1}^{N}x_{i}=1}
The same concept expressed with a denominator of 100 is the mole percent, molar percentage or molar proportion (mol%).
The mole fraction is also called the amount fraction.[1] It is identical to the number fraction, which is defined as the number of molecules of a constituent Ni divided by the total number of all molecules Ntot. This expression is given below:-
{\displaystyle x_{i}={\frac {n_{i}}{n_{\mathrm {tot} }}}}{\displaystyle x_{i}={\frac {n_{i}}{n_{\mathrm {tot} }}}}
The sum of all the mole fractions is equal to 1:
{\displaystyle \sum _{i=1}^{N}n_{i}=n_{\mathrm {tot} };\;\sum _{i=1}^{N}x_{i}=1}{\displaystyle \sum _{i=1}^{N}n_{i}=n_{\mathrm {tot} };\;\sum _{i=1}^{N}x_{i}=1}
