The feed is $60$ mol$\%$ dimethyl ether $($DME$)$

and $40$ mol$\%$ methanol. Assume that the equilibrium data

provided are correct.

a$)$ A feed of $200$ kmol$/$h is flashed at $5$ bar and $50\backslash$deg C$.$ What are

the liquid and vapor flowrates and the mole fractions in the vapor

and liquid exit streams?