The effect produced on separation of AQC-amino acids when C8-silica is used instead of C18-silica , in HPLC of AQC-amino acids, keeping all the other conditions same, is to be stated. Concept introduction: The amino acids are polar molecules. They have positive amine and negative carboxyl groups. When the polarity of amino acids is less they do not react with highly polar water molecules. They are known as hydrophobic. When the polarity is more, they react with water molecule and known as hydrophilic. Some molecules have both hydrophobic and hydrophilic ends.

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Answer 1

Question

Chapter 27, Problem 27.60AP

Interpretation Introduction

Interpretation:

The effect produced on separation of AQC-amino acids when C8-silica is used instead of C18-silica, in HPLC of AQC-amino acids, keeping all the other conditions same, is to be stated.

Concept introduction:

The amino acids are polar molecules. They have positive amine and negative carboxyl groups. When the polarity of amino acids is less they do not react with highly polar water molecules. They are known as hydrophobic. When the polarity is more, they react with water molecule and known as hydrophilic. Some molecules have both hydrophobic and hydrophilic ends.

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(a) Redraw the tripeptide in zwitterionic form (b) Explain how ESI-MS can be used to determine which amino acid is in the middle of the sequence.

Draw the structure of the tetrapeptide Asp-Arg-Val-Tyr. Please show the appropriate stereochemistry of the natural amino acids in the resulting peptide. Please draw all ionizable groups in their neutral form.

His-Met-Asp-Tyr-Phe-Ser within this peptide, which amino acid residue is the most hydrophobic and why?

Answer 2

Question

Chapter 27, Problem 27.60AP

Interpretation Introduction

Interpretation:

The effect produced on separation of AQC-amino acids when C8-silica is used instead of C18-silica, in HPLC of AQC-amino acids, keeping all the other conditions same, is to be stated.

Concept introduction:

The amino acids are polar molecules. They have positive amine and negative carboxyl groups. When the polarity of amino acids is less they do not react with highly polar water molecules. They are known as hydrophobic. When the polarity is more, they react with water molecule and known as hydrophilic. Some molecules have both hydrophobic and hydrophilic ends.

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Check out a sample textbook solution

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Answer 3

Question

Chapter 27, Problem 27.60AP

Interpretation Introduction

Interpretation:

The effect produced on separation of AQC-amino acids when C8-silica is used instead of C18-silica, in HPLC of AQC-amino acids, keeping all the other conditions same, is to be stated.

Concept introduction:

The amino acids are polar molecules. They have positive amine and negative carboxyl groups. When the polarity of amino acids is less they do not react with highly polar water molecules. They are known as hydrophobic. When the polarity is more, they react with water molecule and known as hydrophilic. Some molecules have both hydrophobic and hydrophilic ends.

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Answer 4

Question

Chapter 27, Problem 27.60AP

Interpretation Introduction

Interpretation:

The effect produced on separation of AQC-amino acids when C8-silica is used instead of C18-silica, in HPLC of AQC-amino acids, keeping all the other conditions same, is to be stated.

Concept introduction:

The amino acids are polar molecules. They have positive amine and negative carboxyl groups. When the polarity of amino acids is less they do not react with highly polar water molecules. They are known as hydrophobic. When the polarity is more, they react with water molecule and known as hydrophilic. Some molecules have both hydrophobic and hydrophilic ends.

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Answer 5

Chapter 27, Problem 27.60AP

Interpretation Introduction

Interpretation:

The effect produced on separation of AQC-amino acids when C8-silica is used instead of C18-silica, in HPLC of AQC-amino acids, keeping all the other conditions same, is to be stated.

Concept introduction:

The amino acids are polar molecules. They have positive amine and negative carboxyl groups. When the polarity of amino acids is less they do not react with highly polar water molecules. They are known as hydrophobic. When the polarity is more, they react with water molecule and known as hydrophilic. Some molecules have both hydrophobic and hydrophilic ends.

Answer 6

Chapter 27, Problem 27.60AP

Interpretation Introduction

Interpretation:

The effect produced on separation of AQC-amino acids when C8-silica is used instead of C18-silica, in HPLC of AQC-amino acids, keeping all the other conditions same, is to be stated.

Concept introduction:

The amino acids are polar molecules. They have positive amine and negative carboxyl groups. When the polarity of amino acids is less they do not react with highly polar water molecules. They are known as hydrophobic. When the polarity is more, they react with water molecule and known as hydrophilic. Some molecules have both hydrophobic and hydrophilic ends.

Answer 7

Chapter 27, Problem 27.60AP

Interpretation Introduction

Interpretation:

The effect produced on separation of AQC-amino acids when C8-silica is used instead of C18-silica, in HPLC of AQC-amino acids, keeping all the other conditions same, is to be stated.

Concept introduction:

The amino acids are polar molecules. They have positive amine and negative carboxyl groups. When the polarity of amino acids is less they do not react with highly polar water molecules. They are known as hydrophobic. When the polarity is more, they react with water molecule and known as hydrophilic. Some molecules have both hydrophobic and hydrophilic ends.

Answer 8

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Answer 11

Ch. 27 - Prob. 27.1P Ch. 27 - Prob. 27.2P Ch. 27 - Prob. 27.3P Ch. 27 - Prob. 27.4P Ch. 27 - Prob. 27.5P Ch. 27 - Prob. 27.6P Ch. 27 - Prob. 27.8P Ch. 27 - Prob. 27.9P Ch. 27 - Prob. 27.10P Ch. 27 - Prob. 27.11P

Solution Summary: The author analyzes the effect of C8-silica on the separation of AQC-amino acids in HPLC.

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