The stereocenter in thalidomide should be identified. Concept introduction: Chiral carbon is any stereocenter attached to four different alkyl substituents. It is also known as stereocenter. If any two of the substituent happen to be similar the center is regarded as achiral. However, the most essential criteria that help to distinguish a chiral or non-chiral system ispresence of any symmetry element. If any plane center or axis of symmetry is identified it makes molecule achiral and optically inactive. Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomers was successful as sedative, other enantiomer caused certain birth defects.

Question

H2O2(aq) +3 I¯(aq) +2 H+(aq) → 13(aq) +2 H₂O(l)· ••• Experiment [H2 O2]o (M) [I]o (M) [H+]。 (M) Initial rate (M/s) 1 0.15 0.15 0.05 0.00012 234 0.15 0.3 0.05 0.00024 0.3 0.15 0.05 0.00024 0.15 0.15 0.1 0.00048 Calculate the overall order of this reaction using the table data.

Answer 1

Question

Chapter 5, Problem 39P

(a)

Interpretation Introduction

Interpretation:The stereocenter in thalidomide should be identified.

Concept introduction:Chiral carbon is any stereocenter attached to four different alkyl substituents. It is also known as stereocenter. If any two of the substituent happen to be similar the center is regarded as achiral. However, the most essential criteria that help to distinguish a chiral or non-chiral system ispresence of any symmetry element. If any plane center or axis of symmetry is identified it makes molecule achiral and optically inactive.

Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomers was successful as sedative, other enantiomer caused certain birth defects.

(b)

Interpretation Introduction

Interpretation:Two enantiomers in thalidomide should be drawn and labeled.

Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as a and so on.

The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.

If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.

(c)

Interpretation Introduction

Interpretation: The relevant hydrogen that shows acidic properties should be identified in thalidomide.

Concept introduction:Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomer was successful as sedative, other enantiomer caused certain birth defects. The two enantiomers of thalidomide are as follows:

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H2O2(aq) +3 I¯(aq) +2 H+(aq) → 13(aq) +2 H₂O(l)· ••• Experiment [H2 O2]o (M) [I]o (M) [H+]。 (M) Initial rate (M/s) 1 0.15 0.15 0.05 0.00012 234 0.15 0.3 0.05 0.00024 0.3 0.15 0.05 0.00024 0.15 0.15 0.1 0.00048 Calculate the overall order of this reaction using the table data.

The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants. The maximum level that the EPA considers safe for lead air pollution is 1.5 μg/m³ Part A If your lungs were filled with air containing this level of lead, how many lead atoms would be in your lungs? (Assume a total lung volume of 5.40 L.) ΜΕ ΑΣΦ = 2.35 1013 ? atoms ! Check your rounding. Your final answer should be rounded to 2 significant figures in the last step. No credit lost. Try again.

Y= - 0.039 (14.01) + 0.7949

Answer 2

Question

Chapter 5, Problem 39P

(a)

Interpretation Introduction

Interpretation:The stereocenter in thalidomide should be identified.

Concept introduction:Chiral carbon is any stereocenter attached to four different alkyl substituents. It is also known as stereocenter. If any two of the substituent happen to be similar the center is regarded as achiral. However, the most essential criteria that help to distinguish a chiral or non-chiral system ispresence of any symmetry element. If any plane center or axis of symmetry is identified it makes molecule achiral and optically inactive.

Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomers was successful as sedative, other enantiomer caused certain birth defects.

(b)

Interpretation Introduction

Interpretation:Two enantiomers in thalidomide should be drawn and labeled.

Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as a and so on.

The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.

If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.

(c)

Interpretation Introduction

Interpretation: The relevant hydrogen that shows acidic properties should be identified in thalidomide.

Concept introduction:Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomer was successful as sedative, other enantiomer caused certain birth defects. The two enantiomers of thalidomide are as follows:

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Answer 3

Question

Chapter 5, Problem 39P

(a)

Interpretation Introduction

Interpretation:The stereocenter in thalidomide should be identified.

Concept introduction:Chiral carbon is any stereocenter attached to four different alkyl substituents. It is also known as stereocenter. If any two of the substituent happen to be similar the center is regarded as achiral. However, the most essential criteria that help to distinguish a chiral or non-chiral system ispresence of any symmetry element. If any plane center or axis of symmetry is identified it makes molecule achiral and optically inactive.

Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomers was successful as sedative, other enantiomer caused certain birth defects.

(b)

Interpretation Introduction

Interpretation:Two enantiomers in thalidomide should be drawn and labeled.

Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as a and so on.

The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.

If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.

(c)

Interpretation Introduction

Interpretation: The relevant hydrogen that shows acidic properties should be identified in thalidomide.

Concept introduction:Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomer was successful as sedative, other enantiomer caused certain birth defects. The two enantiomers of thalidomide are as follows:

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Answer 4

Question

Chapter 5, Problem 39P

(a)

Interpretation Introduction

Interpretation:The stereocenter in thalidomide should be identified.

Concept introduction:Chiral carbon is any stereocenter attached to four different alkyl substituents. It is also known as stereocenter. If any two of the substituent happen to be similar the center is regarded as achiral. However, the most essential criteria that help to distinguish a chiral or non-chiral system ispresence of any symmetry element. If any plane center or axis of symmetry is identified it makes molecule achiral and optically inactive.

Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomers was successful as sedative, other enantiomer caused certain birth defects.

(b)

Interpretation Introduction

Interpretation:Two enantiomers in thalidomide should be drawn and labeled.

Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as a and so on.

The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.

If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.

(c)

Interpretation Introduction

Interpretation: The relevant hydrogen that shows acidic properties should be identified in thalidomide.

Concept introduction:Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomer was successful as sedative, other enantiomer caused certain birth defects. The two enantiomers of thalidomide are as follows:

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Answer 5

Chapter 5, Problem 39P

(a)

Interpretation Introduction

Interpretation:The stereocenter in thalidomide should be identified.

Concept introduction:Chiral carbon is any stereocenter attached to four different alkyl substituents. It is also known as stereocenter. If any two of the substituent happen to be similar the center is regarded as achiral. However, the most essential criteria that help to distinguish a chiral or non-chiral system ispresence of any symmetry element. If any plane center or axis of symmetry is identified it makes molecule achiral and optically inactive.

Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomers was successful as sedative, other enantiomer caused certain birth defects.

(b)

Interpretation Introduction

Interpretation:Two enantiomers in thalidomide should be drawn and labeled.

Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as a and so on.

The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.

If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.

(c)

Interpretation Introduction

Interpretation: The relevant hydrogen that shows acidic properties should be identified in thalidomide.

Concept introduction:Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomer was successful as sedative, other enantiomer caused certain birth defects. The two enantiomers of thalidomide are as follows:

Answer 6

Chapter 5, Problem 39P

(a)

Interpretation Introduction

Interpretation:The stereocenter in thalidomide should be identified.

Concept introduction:Chiral carbon is any stereocenter attached to four different alkyl substituents. It is also known as stereocenter. If any two of the substituent happen to be similar the center is regarded as achiral. However, the most essential criteria that help to distinguish a chiral or non-chiral system ispresence of any symmetry element. If any plane center or axis of symmetry is identified it makes molecule achiral and optically inactive.

Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomers was successful as sedative, other enantiomer caused certain birth defects.

Answer 7

Chapter 5, Problem 39P

(a)

Interpretation Introduction

Interpretation:The stereocenter in thalidomide should be identified.

Concept introduction:Chiral carbon is any stereocenter attached to four different alkyl substituents. It is also known as stereocenter. If any two of the substituent happen to be similar the center is regarded as achiral. However, the most essential criteria that help to distinguish a chiral or non-chiral system ispresence of any symmetry element. If any plane center or axis of symmetry is identified it makes molecule achiral and optically inactive.

Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomers was successful as sedative, other enantiomer caused certain birth defects.

Answer 8

(b)

Interpretation Introduction

Interpretation:Two enantiomers in thalidomide should be drawn and labeled.

Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as a and so on.

The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.

If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.

Answer 9

(b)

Interpretation Introduction

Interpretation:Two enantiomers in thalidomide should be drawn and labeled.

Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as a and so on.

The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.

If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.

Answer 10

(c)

Interpretation Introduction

Interpretation: The relevant hydrogen that shows acidic properties should be identified in thalidomide.

Concept introduction:Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomer was successful as sedative, other enantiomer caused certain birth defects. The two enantiomers of thalidomide are as follows:

Answer 11

(c)

Interpretation Introduction

Interpretation: The relevant hydrogen that shows acidic properties should be identified in thalidomide.

Concept introduction:Thalidomide was originally taken as sedative against morning sickness; while one of its enantiomer was successful as sedative, other enantiomer caused certain birth defects. The two enantiomers of thalidomide are as follows:

Answer 12

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Ch. 5.1 - Prob. 5.3E Ch. 5.1 - Prob. 5.4E Ch. 5.1 - Prob. 5.5E Ch. 5.2 - Prob. 5.6E Ch. 5.2 - Prob. 5.8TIY Ch. 5.3 - Prob. 5.9E Ch. 5.3 - Prob. 5.11TIY Ch. 5.3 - Prob. 5.12E Ch. 5.4 - Prob. 5.13E Ch. 5.4 - Prob. 5.14E

Solution Summary: The author explains that the stereocenter in thalidomide should be identified. The first step is to assign absolute configuration of R and S on the basis of atomic number.

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