A condenser is used to remove methyl ethyl ketone (MEK) from air. The entering MEK and air stream has a mass fraction of 0.354 MEK with the balanced air. Pure MEK condenses, and this liquid exits the unit at a rate of 89.6 L/h. The purified air stream that exits the condenser contains a small amount of MEK (mole fraction of 0.011 MEK with the balance air).

a) Calculate the rate a which MEK condenses as a molar flow rate (kmol/h)

(Answer: 1kmol/hr)

b) Calculate the rate the MEK/Air mixture is fed to the condenser as a molar flow rate (kmol/h)

(Answer: n1= 5.82 or 11.6 kmol/hr)