BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213
BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

Solutions

Chapter 26, Problem 26.21QAP
Interpretation Introduction

(a)

Interpretation:

Retention factors for each compound should be calculated.

Concept introduction:

Following equation can be used in calculation of retention factors.

k=tRtMtMwhere:k=RetentionfactortR=RetentiontimeofinterestedspeciestM=Migrationtimeofunretainedspecies

Interpretation Introduction

(b)

Interpretation:

Distribution constants for each compound should be calculated.

Concept introduction:

The distribution constant can be calculated as follows:

K=kVMVswhere:K=Distributionconstantk=RetentionfactorVS=StationaryphasevolumeVM=Volumeofmobilephase

Interpretation Introduction

(c)

Interpretation:

Selectivity factor for methylcyclohexane and methylcyclohexene should be calculated.

Concept introduction:

For the calculation of selectivity factor for methylcyclohexane and methylcyclohexene, the following formula will be used:

α=(tR)BtM(tR)AtMHere,α=Selectivityfactor(tR)Aand(tR)B=RetentiontimeofsubstanceAandBrespectivelytM=Migrationtimeofunretainedspecies

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