As of alcchols is to be separated by flash distillation. The input feed flows at mo ir and ontains $45\mathrm{.}0$ mol $\%$ isobutanol, $15\mathrm{.}0\%$ isopentanol, $10\mathrm{.}0\%$ isohexanol,

$25\mathrm{.}0\%$ isoheptanol and $5\mathrm{.}00$mol$\%$ isooctanol. The separation works well with all the isobutanol exiting the top stream and without any isooctanol in the top stream. $80\%$ of the

isopentanol leaves in the top stream. The isohexanol is split with $2\mathrm{.}50-$fold more in the bottoms stream than the top. The isoheptanol is similarly split with $7\mathrm{.}30-$fold more in the

bottoms than the top. The process is at steady state.

Label a block flow diagram and perform a degree of freedom analysis. It is recommended to use the method of analyzing component flow rates to set up and

solve this problem analytically $($be sure your block flow diagram represents your method of solution$).$ Solve for the outlet compositions and flow rates using a calculator and paper.

Label a second block flow diagram using compositions rather than components and perform a degree of freedom analysis. Write out equations using unknowns and input into Excel. Solve for outlet compositions and flow rates using Solver.

Do your solutions match?