Question

Step 1

Part (a)

Let the mass of the fermenter products be *m _{F}* kg which is fed to the distiller to produce

The feed to the distiller contains 0.08 mass fraction of ethanol represented by ‘E’ and balance substance ‘A’.

In the distillate, ethanol present is 50% and in residue, it is 3%.

The flowchart representing this process is drawn below as:

Step 2

Part (b)

The formula used to calculate degree of freedom (DF) is written below.

Step 3

There are total 3 unknown variables present. These are, *mF, mD,* and* mR*.

There are 2 independent equations, one for each ...

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