**H1.** Generation of distillation curves for systems with constant relative volatility is fairly straightforward and is an excellent learning experience. Generate distillation curves in Figure 8-7 for the benzene (A), toluene (B), cumene (C) system with α_{AB} = 2.4, α_{BB} = 1.0 and α_{CB} = 0.21. Operation is at total reflux.

**a.** Mole fraction of A in the reboiler is 0.006735 and mole fraction of B is 0.003469.*

**b.** Mole fraction of A in the reboiler is 0.001 and mole fraction of B is 0.009.*

**c.** Mole fraction of A in the reboiler is 0.0003 and mole fraction of B is 0.0097.

Remember the sum of the mole fractions of A, B, and C in the reboiler is 1.0. *Solution is shown in Figure 8-7.

**H2.** Generation of residue curves for systems ...

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