A mixture of $60$ mol$\%$ A and $40$ mol$\%$ B is combined with a recycled stream of pure

C$.$ The combined stream enters a separation process along with a recycle stream containing the

same components $(35$ wt$\%$ A$,20$ wt$\%$ B$,$ and $45$ wt$\%$ C$).$ Two streams leave this process at $25\backslash$deg C;

the product stream containing $100$ lbm$/$hr A$,$ and a stream containing all three components $(30$

wt$\%$ A$,14$ wt$\%$ B$,$ and $56$ wt$\%$ C$).$ This stream enters a second separation unit that recovers a

pure C stream, a pure B stream, and the recycle stream that enters the first separation unit. The

C stream is heated and recycled to combine with the A$/$B feed stream. We want to determine the flow rate and composition of each stream.

a$.(10$ points$)$ Draw and label a flow diagram.

b$.(15$ points$)$ Complete a degree of freedom analysis around the entire process and each unit$/$mixing

point$/$splitting point. Note what all of the equations and unknowns are.

c$.(20$ points$)$ List the order in which you would solve the equations; note which unknown$($s$)$ you would solve for in each step $($do not complete any calculations$).$

d$.(5$ points$)$ What additional information is needed to complete the calculations?

LABEL ALL COMPONENTS AND VARIABLES IN THE DIAGRAM and also write$/$explain equations and unknowns