If a substance ‘A’ dissolves in solution of a mixture of ‘B’ and ‘C’ with their respective number of moles as nA, nB and nC, mole fraction of C in the solution is:
1
\(\frac{n_C}{n_A\times n_B\times n_C}\)
2
\(\frac{n_C}{n_A+ n_B+ n_C}\)
3
\(\frac{n_C}{n_A- n_B- n_C}\)
4
\(\frac{n_B}{n_A+ n_B}\)