An ideal equimolar mixture of hexane and decane is sent to a flash drum, which

operates at equilibrium at $760mmHg(1$atm$)$ and $120C.$ The saturation pressure $($in $mm$

$Hg)$ of each component can be calculated using the following Antoine equations:

$lo{g}_{10}(p_{\text{h}\text{e}\text{x}\text{a}\text{n}\text{e}})=6\mathrm{.}91058-\frac{1189\mathrm{.}64}{T(C)+226\mathrm{.}28}$

$lo{g}_{10}(p_{\text{d}\text{e}\text{c}\text{a}\text{n}\text{e}})=7\mathrm{.}44-\frac{1843\mathrm{.}12}{T(C)+230\mathrm{.}22}$

a$.$ What is the compositions of the liquid and vapor phases.

b$.$What is the fraction of the outlet $($effluent$)$ that is vapor $($i$.$e$.$ the vapor outlet

flow rate over the inlet flow rate$).$

$($Hint: Assuming that the inlet flow rate is equal to $1mo\frac{l}{h}$ will make your calculations easier.$)$