For an ideal liquid solution, which of the following is unity?

Solution (By Examveda Team)

For an ideal liquid solution the activity coefficient will be equal to 1. Since, activity coefficient of a species is defined as
\[{{\gamma }_{i}}=\frac{\text{fugacity of the species in the real solution}\left( \widetilde{{{f}_{l}}} \right)}{\text{fugacity of the species in the ideal solution}\left( \widetilde{{{f}_{l}}^{ld}} \right)}\]
For ideal solution \[\widetilde{{{f}_{l}}}=\widetilde{{{f}_{l}}^{ld}}\]
\[{\rm{So, }}{\gamma _i} = 1\]