The following expressions have been reported for the activity coefficients of species$1$ and $2$ in a binary liquid mixture at given T and P: $1=22(0\mathrm{.}273+0\mathrm{.}0961)2=12(0.2730\mathrm{.}0962)($a$)$ Determine the implied expression for E $.($b$)$ Generate expressions for $12$ from the result of part $($a$).($c$)$ Compare the results of part $($b$)$ with the reported expressions for $12.$Discuss any discrepancy. Can the reported expressions possibly be correct?