1 Answers
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:
The sum of all the mole fractions is equal to 1:
The same concept expressed with a denominator of 100 is the mole percent, molar percentage or molar proportion.
The mole fraction is also called the amount fraction. 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. The mole fraction is sometimes denoted by the lowercase Greek letter χ instead of a Roman x. For mixtures of gases, IUPAC recommends the letter y.
4 views
Answered