The nonequilihrium-cell model described in part I is used to determine the binary mass-transfer coefficients of vapor and liquid phases on the bubble-cap and sieve trays. The coefficients determined by the model are compared with the AIChE correlations for the experiments of absorption of ammonia in air with water and of the distillation of methanol/water system under total reflux. For the one-phase rate controlling system-absorption of ammonia on bubble-cap trays

the model gives the same values of the gas phase mass-transfer coefficients as those from the AIChE correlation. However

for the two phase controlling system-distillation of methanol/water on sieve tray

the individual coefficients determined by the model are 20-70% higher than those from the AIChE correlations. The results show that the nonequilibrium-cell method can be successfully used to determime the mass-transfer coefficients on distillation trays

and it is more reasonable and convenient to use this method than to use the conventional efficiency method and chemical method.