A liquid mixture contains 60.0 wt% ethanol (E), 5.0 wt% of a dissolved solute (S), and...

A liquid mixture contains 60.0 wt% ethanol (E), 5.0 wt% of a dissolved solute (S), and the
balance water (W). A stream of this mixture is fed to a continuous distillation column
operating at steady-state. Product streams emerge at the top and bottom of the column.
The column design calls for the product streams to have equal mass flow rates and for the
top stream to contain 90.0 wt% ethanol and no S. (Hint: In order to solve this problem, you
will need to assume a basis for calculation (100 kg/hr), draw and fully label a process flow or
block diagram, and check to make sure that it can be solved for all unknown stream flows
and composition). What is the flowrate of the bottom stream (in kg/hr)?

A. 10-25 kg/hr
B. 26-50 kg/hr
C. 51-75 kg/hr
D. 76-100 kg/hr
E. 100 – 125 kg/hr

Expert Solution

Amanda K answered 6 months ago

A liquid mixture contains 60 wt% ethanol, 5 wt% of a dissolved solute, and the balance...

A liquid mixture contains 60 wt% ethanol, 5 wt% of a dissolved solute, and the balance water. A stream of this mixture is fed to a distillation column operating at steady state. The streams emerging from the column have equal mass flow rates. The top stream contains 90 wt% ethanol with no solute. Solve for all the mass fractions of the bottom stream and solve for the 3 mass flow rates

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