For a miscible system

and

$P_T=P_A+P_B$

and

$P_A=x_A{P}_A^0$

$x_A=\frac{mo{l}_A}{mo{l}_A+mo{l}_B}$

This means that the total vapor pressure is dependent on the mole fraction $(x)$ of each component. $P^0$ is the vapor pressure of a pure liquid at a given temperature. This is something you would look up or be given in a table of values. The moles of each component can be calculated based on the volume used, density, and molar mass.

a$.$ Calculate the total vapor pressure of a system made of $10mL$ water and $5mL$ methyl salicylate at $108C.P_{\text{v}\text{e}\text{a}\text{t}\text{e}\text{r}}=1\mathrm{.}0512$atm and $P_{\text{p}\text{o}\text{s}}=0\mathrm{.}0238$atm at this temperature. Assume the system is miscible.

b$.$ Is this system boiling $($assuming it is miscible?$)$ at $108C?$