(a) Interpretation: In the R , S system the α − carbon configuration of L- cysteine is to be stated. Concept introduction: The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

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Answer 1

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Chapter 27, Problem 27.26P

Interpretation Introduction

(a)

Interpretation:

In the R,S system the α− carbon configuration of L- cysteine is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

Interpretation Introduction

(b)

Interpretation:

The reason as to why L− cysteine and L− serine have a different configuration in the R,S system is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

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Calculating the pH at equivalence of a titration A chemist titrates 210.0 mL of a 0.1003 M hydrobromic acid (HBr) solution with 0.7550M KOH solution at 25 °C. Calculate the pH at equivalence. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added. pH = ] ☑ o0o 18 Ar

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Using the conditions of spontaneity to deduce the signs of AH and AS Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions A This reaction is always spontaneous, but proceeds slower at temperatures above 120. °C. ΔΗ is (pick one) AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous except above 117. °C. AS is (pick one) ΔΗ is (pick one) This reaction is slower below 20. °C than C above. AS is |(pick one) ? 18 Ar 1

Answer 2

Question

Chapter 27, Problem 27.26P

Interpretation Introduction

(a)

Interpretation:

In the R,S system the α− carbon configuration of L- cysteine is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

Interpretation Introduction

(b)

Interpretation:

The reason as to why L− cysteine and L− serine have a different configuration in the R,S system is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

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Answer 3

Question

Chapter 27, Problem 27.26P

Interpretation Introduction

(a)

Interpretation:

In the R,S system the α− carbon configuration of L- cysteine is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

Interpretation Introduction

(b)

Interpretation:

The reason as to why L− cysteine and L− serine have a different configuration in the R,S system is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

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Answer 4

Question

Chapter 27, Problem 27.26P

Interpretation Introduction

(a)

Interpretation:

In the R,S system the α− carbon configuration of L- cysteine is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

Interpretation Introduction

(b)

Interpretation:

The reason as to why L− cysteine and L− serine have a different configuration in the R,S system is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

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Answer 5

Chapter 27, Problem 27.26P

Interpretation Introduction

(a)

Interpretation:

In the R,S system the α− carbon configuration of L- cysteine is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

Interpretation Introduction

(b)

Interpretation:

The reason as to why L− cysteine and L− serine have a different configuration in the R,S system is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

Answer 6

Chapter 27, Problem 27.26P

Interpretation Introduction

(a)

Interpretation:

In the R,S system the α− carbon configuration of L- cysteine is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

Answer 7

Chapter 27, Problem 27.26P

Interpretation Introduction

(a)

Interpretation:

In the R,S system the α− carbon configuration of L- cysteine is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The reason as to why L− cysteine and L− serine have a different configuration in the R,S system is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The reason as to why L− cysteine and L− serine have a different configuration in the R,S system is to be stated.

Concept introduction:

The absolute configuration of a molecule is a spatial arrangement of atoms. It is represented by two terms R and S where R refers to rectus and S refers to sinister. Whether the molecule is assigned either R or S configuration is based Cahn-Ingold-Prelog rule. It is based on the priority order of the substituents which is based on the atomic number. If the priority order is clockwise then it is assigned R configuration otherwise S configuration. Also, the lowest priority group is kept away from the observer.

Answer 10

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Answer 13

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 explains that the absolute configuration of a molecule is represented by two terms: R and S.

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