$6\mathrm{.}56.$ Nitrogen is bubbled through a liquid mixture that initially contains equimolar amounts of benzene

and toluene. The system pressure is $3$atm and the temperature is $80C.$ The nitrogen flow rate is

$10\mathrm{.}0$ standard liters per minute. The gas leaving the bubbler is saturated with benzene and toluene

vapors.

$($a$)$ Estimate the initial rates $(mo\frac{l}{m}in)$ at which benzene and toluene leave the bubbler.

$($b$)$ How will the mole fractions of benzene and toluene in the liquid change with time $($increase$,$

decrease, or remain constant$)?$ Explain your answer.

$($c$)$ How will the mole fractions of benzene and toluene in the exiting gas change with time $($increase$,$

decrease, or remain constant$)?$ Explain your answer.