What is the mol fraction of water?

1 Answer
Truong-Son N.
Feb 6, 2017

Well, what's the definition of mol fraction?

chi_i = n_i/(n_1 + n_2 + . . . + n_N)

where chi_i is the mol fraction of component i, n_i is the mols of i, and the denominator contains the sum of the mols of everything in the solution.

With just water by itself, we have:

chi_i = n_(H_2O)/(n_(H_2O)) = 1

since n_"tot" = n_(H_2O) in a pure-water "solution".

Related questions
See all questions in The Mole
Impact of this question
2131 views around the world
You can reuse this answer
Creative Commons License