A chromatographer fed up with waiting 36 minutes to accomplish a separation requiring 8000 plates, packs a new column to reduce separation time. She slashed the particle diameter by a factor of 3. She adjusted the flow rate to work at the same reduced velocity as before ( the h versus v curves for the two columns are the same) and chooses a column length to get the same number of plates. Comparing the new column to the old, by what factor will the following parameters change: a) plate height b) column length c) flow velocity d) pressure drop e) separation time? What is the new separation time?

A chromatographer fed up with waiting 36 minutes to accomplish a separation requiring 8000 plates, packs a new column to reduce separation time. She slashed the particle diameter by a factor of 3. She adjusted the flow rate to work at the same reduced velocity as before ( the h versus v curves for the two columns are the same) and chooses a column length to get the same number of plates. Comparing the new column to the old, by what factor will the following parameters change: a) plate height b) column length c) flow velocity d) pressure drop e) separation time? What is the new separation time?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

A chromatographer fed up with waiting 36
minutes to accomplish a separation requiring
8000 plates, packs a new column to reduce
separation time. She slashed the particle
diameter by a factor of 3. She adjusted the
flow rate to work at the same reduced
velocity as before ( the h versus v curves for
the two columns are the same) and chooses a
column length to get the same number of
plates.
Comparing the new column to the old, by
what factor will the following parameters
change:
a) plate height
b) column length
c) flow velocity
d) pressure drop
e) separation time?
What is the new separation time?

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