Q.3 A solution composed of 50 wt% ethanol (EtOH), 10 wt% methanol (MeOH), and 40 wt% water (H2O) is fed at the rate of 100 kg/h into a separator that produces one stream at the rate of 60 kg/h with the composition of 80 wt% EtOH, 15 wt% MeOH, and 5 wt% H2O, and a second stream of unkown composition. Draw and label a flowchart of this process and do the degree-of-freedom analysis. Calculate the compostion (in wt%) of the three compounds in the unkown stream and its flowrate in kg/h.

Q.3 
A solution composed of 50 wt% ethanol (EtOH), 10 wt% methanol (MeOH), and 40 wt% 
water (H2O) is fed at the rate of 100 kg/h into a separator that produces one stream at the rate 
of 60 kg/h with the composition of 80 wt% EtOH, 15 wt% MeOH, and 5 wt% H2O, and a 
second stream of unkown composition. Draw and label a flowchart of this process and do the 
degree-of-freedom analysis. Calculate the compostion (in wt%) of the three compounds in the 
unkown stream and its flowrate in kg/h.