When using the plate height method to determine the height of the packing layer, is it necessary to subtract one from the calculation of the theoretical number of stages?
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Why is one subtracted in the formulas for calculating theoretical series in all textbook theories, yet in the examples that follow, this subtraction is omitted when using these formulas to calculate theoretical series? Is there some underlying requirement for this?
I encountered this problem too. At first I thought the example was wrong, but when I worked on the other problems, the answers still didn’t include a subtraction of 1, which puzzled me:@