a$)$ At what temperature does the first bubble form?

b$)$ What is the vapor composition of $A$&$B$ at the first bubble?

c$)$ At what temperature does the last drop vaporize?

d$)$ What was the liquid composition of the last droplet?

Part B: Select the correct answer $(1$ pt each answer$)$

e$)$ If a gas at $60\mathrm{.}0C$ and $101\mathrm{.}6$kPa abs$.$ has a molal humidity of $0\mathrm{.}030$ if the vapor pressure of the water at this condition is $19\mathrm{.}9$kPa, the partial pressure of the water pHzO $($in kPa $)$ is:

a$.14\mathrm{.}2$

b$.2\mathrm{.}96$

c$.6\mathrm{.}82$

d$.12\mathrm{.}2$

f$)$ The bubble point temperature of a liquid mixture that contains equimolar benzene and toluene is $117\mathrm{.}5C.$ The corresponding total pressure $($at bubble point$)$ in $mmHg$ is:

a$.1800$

b$.820$

c$.1520$

d$.1020$

g$)$ The vapor mole fraction of benzene $(y_B)$ in equilibrium with a liquid that is $60\mathrm{.}0$ mol$\%$ benzene$-40\mathrm{.}0$ toluene at a bubble point temperature of $98\mathrm{.}8C$ and total pressure of $1000mmHg$ is:

a$.0\mathrm{.}99$

b$.0\mathrm{.}79$

c$.0\mathrm{.}65$

d$.0\mathrm{.}45$