Henry's law constant for molality of methane ib benzene at 298 K is $4.27 imes 10^5 \mathrm{~mm} \

Question

Henry's law constant for molality of methane ib benzene at 298 K is $4.27 	imes 10^5 \mathrm{~mm} \mathrm{Hg}$. The mole fraction of methane in benzene at 298 K under 760 mm Hg is

Professor PC Thomas Classes · Answer

Henry's Law $p = K_H x \implies x = \frac{p}{K_H} = \frac{760}{4.27 	imes 10^5} \approx 1.78 	imes 10^{-3}$.