A flash chamber operating at $80\backslash$deg C and $110$ kPa is separating $100$ kmol$/$h of a feed that is a $3-$

component mixture of species $1,2$ and $3.$ The feed composition is z$1=0\mathrm{.}42,$ z$2=0\mathrm{.}38$ and

z$3=0\mathrm{.}20.$

a$)$ Calculate the bubble point and dew point pressure for this mixture.

b$)$ Would flashing occur at the given temperature $(80\backslash$deg C$)$ and pressure $(110$ kPa$)?$