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Chapter 24: Q21P (page 663)

Describe how retention time of butanol on a poly (ethylene glycol) column will change with increasing temperature. Use the retention time for butanol in Figure 24-9b as the starting point.

Short Answer

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Step by step solution

01

relation of retention time with increase in temperature

Based on Figure 24-9b, the retention timetr' of butanol starts at approximately 9 min. With increasing temperature, thetr' of butanol is expected to decrease logarithmically based on the relationship below:

logtr'=aT+b

where: a and b are constants for butanol on a poly(ethylene glycol) column

02

final answer

logtr'=aT+b

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Most popular questions from this chapter

(a) What types of solutes are typically separated with a poly(dimethylsiloxane)-coated open tubular column?

(b) What types of solutes are typically separated with a poly(ethylene glycol)-coated open tubular column?

(c) What types of solutes are typically separated with a porous-layer open tubular column?

(a) The term that is 0 for an open tubular column has to be explained with the reason.(b) The value of B must be stated in terms of a physical property that can be measured. (c) The value ofCmust be represented in terms of a physical attribute that can be measured. (d)The minimum plate height must be expressed in terms of quantifiable physical amounts of B and C.

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