Calculate ln S? If XLK=0.95 and XHK = 0.05 and XL= 0.90 and X^H= 0.10, then(a) 6.77(b) 5.142(c) 7.898(d) Can’t be calculatedThis question was posed to me in examination.This intriguing question comes from The Jafarey, Dougles and Mcavoy Equation in section Column Process Design, Optimization and Shortcut Calculations of Distillation Design

Calculate ln S? If XLK=0.95 and XHK = 0.05 and XL= 0.90 and X^H= 0.10,

1.	Calculate ln S? If XLK=0.95 and XHK = 0.05 and XL= 0.90 and X^H= 0.10, then(a) 6.77(b) 5.142(c) 7.898(d) Can’t be calculatedThis question was posed to me in examination.This intriguing question comes from The Jafarey, Dougles and Mcavoy Equation in section Column Process Design, Optimization and Shortcut Calculations of Distillation Design
Answer» RIGHT option is (B) 5.142 For explanation I WOULD say: as ln (0.95/0.05) (0.90/0.10) = 5.142.

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