Homework Answers
The Configuration of each Chiral center is :
A : R
B : S
C : R
D : S
The Stereochemical Relationship between A and B is that they are Identical.
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Build two models of chlorocyclohexane...
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4. Build two models of chlorocyclohexane. On one...
Using the templates provided, draw the planar representation (use wedges and dashes!) and both chair conformations...
Using the templates provided, draw the planar representation (use wedges and dashes!) and both chair conformations of the models of 1,3-dichlorocyclohexane Is one chair conformer lower in energy? If so, circle the appropriate conformation above Are the two chlorine atoms cis- or trans- to each other? Can both chlorine atoms be axial in any chair conformation? Would a solution of model A rotate plane polarized light? Why or why not? Is model A a meso compound? Model B? Model B?...
19-26 thanks! 19-29* PART 3: 2,3-BUTANEDIOL CH-CH(OH)-CH(OH)-CH, mirror images, not superimposable Build as many models of...
19-26 thanks!
19-29*
PART 3: 2,3-BUTANEDIOL CH-CH(OH)-CH(OH)-CH, mirror images, not superimposable Build as many models of 2,3-butanediol as you can. First, attach two carbons with a single bond. To each carbon add one carbon, one hydrogen, and one oxygen. To complete the structure, Ti the remaining hydrogen atoms. Remember, a model is not different if it is completely superimposable on one already constructed! 13. How many stereochemically different models are possible for 2,3-butanediol? 14. What characteristic does one of these...
Experiment 10: Modeling Chirality and Cycloalkanes 4. Several compounds are shown below. For each, make two...
Experiment 10: Modeling Chirality and Cycloalkanes 4. Several compounds are shown below. For each, make two models: one model of the compound as shown, and the other where each tetrahedral stereocenter is inverted. Compare the two models side-by-side to see if the model with the inverted stereocenter(s) is the enantiomer, or if it is identical to the original. Remember, you can rotate around o-bonds to place the molecule in the conformation with the highest symmetry. Is each compound meso or...
I have completed some answers! I just really really need help with the rest! I am...
I have completed some answers! I just really really need help
with the rest! I am so lost! please help me, if you can!
What information do you need? Can you see the pictures that I
posted?
#2-6 are using the FIGURE from question #2
#7-8 go together and uses #7 FIGURE
#9-12 uses #9"s FIGURE but #11 and #12 compares the two FIGURES
from #7	
#13 and 14 are together
# 15 and # 16 are their own problems...
rojection Formulas for each model in #16 (again orient the carbon chain up and down). Are...
rojection Formulas for each model in #16 (again orient the carbon chain up and down). Are the mirror images "superimposable?" Interchange any two of the groups located at one of the chiral centers on one of the models in # 1 6. What is the stereochemical relationship of the resulting structure with the one that used to be its mirror image? Will this 'new' model be "optically active?" Why or why not? 18. PART 4:2,3-DICHLOROPENTANE CH, CH(C)-CHC)-CH2CH Build a model...
CHCH(OH)-CH(OH)-CH3 PART 3: 23-BUTANEDIOL Build as many models of 2.3-butanediol as you can. First, attach two...
CHCH(OH)-CH(OH)-CH3 PART 3: 23-BUTANEDIOL Build as many models of 2.3-butanediol as you can. First, attach two carbons with a single bond To each carbon add one carbon, one hydrogen, and one oxygen. To complete the structure. fill in the remaining hydrogen atoms. Remember, a model is not different if it is completelv superimposable on one already constructed! 13. How many stereochemically different models are possible for 2.3-butanediol? 14. What characteristic does one of these models have that makes it different?...
Exercise 2: Geometric isomers. Build plastic models of cis- and trans-1,2-dibromoethene. Confirm that the two models...
Exercise 2: Geometric isomers. Build plastic models of cis- and trans-1,2-dibromoethene. Confirm that the two models are not superimposable. (2) For Draw a top view (atoms in plane) and side view (wedge) for each structure. Exercise 3: Cyclohexane. Build a plastic model of cyclohexane and rotate all C – C bonds into the staggered conformation. (3) Sketch the chair conformation you have constructed.
Procedure B. 1. Build two models of 1, 2-dimethyleyclopentane. The two methy can be on the...
Procedure B. 1. Build two models of 1, 2-dimethyleyclopentane. The two methy can be on the same face or opposite faces of the ring. No matter how t molecule is twisted, they cannot be superimposed on each other. These compounds are stereoisomers of each other. 2. When two groups are present, the prefix cis (same face) or trans (opposite face) can be used in IUPAC nomenclature to specify which stereoisomer is being considered. For drawings, a solid wedged line in...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that are not mirror images can exist; these are called diastereoisomers. Within this general class, there are special types of stereoisomers that are always optically inactive and are called meso forms. Construct a model with four different colored balls about a carbon center. Construct another identical to the first and verify this by the superimposition test. Now remove the same colored balls, blue (C from...
EXPERIMENT W12: ORGANIC STRUCTURES AND MOLECULAR MODELS 7. Build models of all possible isomers of CHCl,...
EXPERIMENT W12: ORGANIC STRUCTURES AND MOLECULAR MODELS 7. Build models of all possible isomers of CHCl, and then draw and name the Lewis Structure for each Isomers that differ in their relative geometry (or orientation) across a rigid double bond are called geometrie isomers. Circle your geometric isomers. Label each molecule as polar or non-polar. Certain physical properties of molecules, such as boiling point, are dependent on the degree of polanty of a molecule. What hybrid orbital is used by...
Using the templates provided, draw the planar representation (use wedges and dashes!) and both chair conformations of the models of 1,3-dichlorocyclohexane Is one chair conformer lower in energy? If so, circle the appropriate conformation above Are the two chlorine atoms cis- or trans- to each other? Can both chlorine atoms be axial in any chair conformation? Would a solution of model A rotate plane polarized light? Why or why not? Is model A a meso compound? Model B? Model B?...
19-26 thanks!
19-29*
PART 3: 2,3-BUTANEDIOL CH-CH(OH)-CH(OH)-CH, mirror images, not superimposable Build as many models of 2,3-butanediol as you can. First, attach two carbons with a single bond. To each carbon add one carbon, one hydrogen, and one oxygen. To complete the structure, Ti the remaining hydrogen atoms. Remember, a model is not different if it is completely superimposable on one already constructed! 13. How many stereochemically different models are possible for 2,3-butanediol? 14. What characteristic does one of these...
Experiment 10: Modeling Chirality and Cycloalkanes 4. Several compounds are shown below. For each, make two models: one model of the compound as shown, and the other where each tetrahedral stereocenter is inverted. Compare the two models side-by-side to see if the model with the inverted stereocenter(s) is the enantiomer, or if it is identical to the original. Remember, you can rotate around o-bonds to place the molecule in the conformation with the highest symmetry. Is each compound meso or...
I have completed some answers! I just really really need help
with the rest! I am so lost! please help me, if you can!
What information do you need? Can you see the pictures that I
posted?
#2-6 are using the FIGURE from question #2
#7-8 go together and uses #7 FIGURE
#9-12 uses #9"s FIGURE but #11 and #12 compares the two FIGURES
from #7	
#13 and 14 are together
# 15 and # 16 are their own problems...
rojection Formulas for each model in #16 (again orient the carbon chain up and down). Are the mirror images "superimposable?" Interchange any two of the groups located at one of the chiral centers on one of the models in # 1 6. What is the stereochemical relationship of the resulting structure with the one that used to be its mirror image? Will this 'new' model be "optically active?" Why or why not? 18. PART 4:2,3-DICHLOROPENTANE CH, CH(C)-CHC)-CH2CH Build a model...
CHCH(OH)-CH(OH)-CH3 PART 3: 23-BUTANEDIOL Build as many models of 2.3-butanediol as you can. First, attach two carbons with a single bond To each carbon add one carbon, one hydrogen, and one oxygen. To complete the structure. fill in the remaining hydrogen atoms. Remember, a model is not different if it is completelv superimposable on one already constructed! 13. How many stereochemically different models are possible for 2.3-butanediol? 14. What characteristic does one of these models have that makes it different?...
Procedure B. 1. Build two models of 1, 2-dimethyleyclopentane. The two methy can be on the same face or opposite faces of the ring. No matter how t molecule is twisted, they cannot be superimposed on each other. These compounds are stereoisomers of each other. 2. When two groups are present, the prefix cis (same face) or trans (opposite face) can be used in IUPAC nomenclature to specify which stereoisomer is being considered. For drawings, a solid wedged line in...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that are not mirror images can exist; these are called diastereoisomers. Within this general class, there are special types of stereoisomers that are always optically inactive and are called meso forms. Construct a model with four different colored balls about a carbon center. Construct another identical to the first and verify this by the superimposition test. Now remove the same colored balls, blue (C from...
EXPERIMENT W12: ORGANIC STRUCTURES AND MOLECULAR MODELS 7. Build models of all possible isomers of CHCl, and then draw and name the Lewis Structure for each Isomers that differ in their relative geometry (or orientation) across a rigid double bond are called geometrie isomers. Circle your geometric isomers. Label each molecule as polar or non-polar. Certain physical properties of molecules, such as boiling point, are dependent on the degree of polanty of a molecule. What hybrid orbital is used by...
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