Repeat Example 5.2 with a solvent for which E = 0.90. Display your results in a plot like Figure. Does countercurrent flow still have a marked advantage over crosscurrent flow? Is it desirable to choose the solvent and solvent rate so that E > 1?Explain.

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99.9 99.8 99.5 Countercurrent flow 99 98 95 Crosseurrent 90 flow 80 Cocurrent flow 70 60 50 40 30 20 10 Number of cquilibrium stages Percent extraction of p-dioxane (probability scale)