If f = moles of vapour present per mole of feed, then the slope of fee – McqOptions

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1.	If f = moles of vapour present per mole of feed, then the slope of feed line is (McCabe- Thiele method) ________________________?
A.	(1 – f)/f
B.	– (f – 1)/f
C.	-1/f
D.	-f/(1 – f)
Answer» D. -f/(1 – f)

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