Structural feature that is common between carboxylic acid and its derivatives has to be chosen from the given options. Concept Introduction: Carbonyl groups are the one which contain a double bond between carbon and oxygen atom. Aldehydes and ketones possess this carbonyl functional group in it. The structural representation of a carbonyl group can be given as shown below, If a hydroxyl group is attached to a carbonyl group means it is known as carboxyl group. This can be represented as shown below, Carboxylic acid derivatives are the ones that are synthesized from or converted to a carboxylic acid. The generalized structural representation of carboxylic acid derivatives is shown below,

Question

(a 4 shows scanning electron microscope (SEM) images of extruded actions of packing bed for two capillary columns of different diameters, al 750 (bottom image) and b) 30-μm-i.d. Both columns are packed with the same stationary phase, spherical particles with 1-um diameter. A) When the columns were prepared, the figure shows that the column with the larger diameter has more packing irregularities. Explain this observation. B) Predict what affect this should have on band broadening and discuss your prediction using the van Deemter terms. C) Does this figure support your explanations in application question 33? Explain why or why not and make any changes in your answers in light of this figure. Figure 4 SEM images of sections of packed columns for a) 750 and b) 30-um-i.d. capillary columns.³

Answer 1

Question

Chapter 16.1, Problem 3QQ

Interpretation Introduction

Interpretation:

Structural feature that is common between carboxylic acid and its derivatives has to be chosen from the given options.

Concept Introduction:

Carbonyl groups are the one which contain a double bond between carbon and oxygen atom. Aldehydes and ketones possess this carbonyl functional group in it. The structural representation of a carbonyl group can be given as shown below,

If a hydroxyl group is attached to a carbonyl group means it is known as carboxyl group. This can be represented as shown below,

Carboxylic acid derivatives are the ones that are synthesized from or converted to a carboxylic acid. The generalized structural representation of carboxylic acid derivatives is shown below,

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