$3.[5$ Pts$]$ According to the first law, upon receiving external heat, saturated liquid can turn into either compressed liquid at higher temperature or binary mixture at the same temperature.

$($a$)$ What is the thermodynamic parameter, available in the thermodynamic table, that can determine what will likely happen? $[2$ Pts$]$

$($b$)$ Among the two possibilities mentioned above, what is the likely process you will see? Use the thermodynamic parameter in part $($a$)$ to explain. $[3$ Pts$]$