Homework Answers
here in the structure the carbon consists of the 2
hydrogen atoms and the bromine and the chlorine and structure
consists of the two same atoms i.e hydrogen and it is not
chiral
2. Draw a 3D Model or build one using model set of CHBrCIF. (2 points) Build...
2. Draw a 3D Model or build one using model set of CHBrCIF. (2 points) Build (or Draw) a model of the mirror image of your first molecule. ii. What is the relationship between the two models of CH BrCl related?
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...
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...
1. Construct a model that has a central carbon atom with 4 different colored spheres attached...
1. Construct a model that has a central carbon atom with 4 different colored spheres attached to it, representing four different atoms or groups. Draw a solid/dashed-wedge structure of this model here and answer the following questions. C (a blue ball) D Fig. 1 B 2. Reconstruct the original stereogenic carbon with the four different colored balls again. Set the model on the table so that the blue ball (C In the Fig 1) points upwards. a. Looking down on...
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?...
Figure 2: How many chiral carbons does this model have? a Does this model have a...
Figure 2: How many chiral carbons does this model have? a Does this model have a plane of symmetry? Rotate the central bond to see b. possible conformations before answering/ Yes No Make the mirror image model of this molecule. Are the mirror images identical? Yes No C. dl What is the term for the relationship between these structures? Are these structures chiral €or achiral? Switch two of the groups on one of the carbons of one model, resulting 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...
1. Construct a model of the 2,3-dibromopentane isomer and label the chiral centers as R or S. The...
1. Construct a model of the 2,3-dibromopentane isomer and label the chiral centers as R or S. Then make a model of its mirror image and draw it below, again labeling the chiral centers as R or S. a. Convert both models to their most stable conformation and draw their Newman projections looking down the center bond. b. On one model interchange the H and Br on one of the chiral centers. How is this molecule related to the other...
3. Cyclic compounds The presence of the ring in all but very large ring cyclic molecules...
3. Cyclic compounds The presence of the ring in all but very large ring cyclic molecules prevents full rotation of the ring atoms. For this reason, stereoisomerism may also occur in cyclic molecules. a) Prepare a model of cyclohexane, C6H12. Draw the condensed formula. b) Build a model of methylcyclohexane (C7H14) by replacing one of the hydrogens of cyclohexane with a methyl group. Draw the skeletal formula for methylcyclohexane. 2 c) How many different isomers exist for methylcyclohexane (CyH34)? d)...
2. (6 points) 1,3-Dichloro-1,2-propadiene is shown below. Draw the mirror image of this molecule. Is the...
2. (6 points) 1,3-Dichloro-1,2-propadiene is shown below. Draw the mirror image of this molecule. Is the mirror image superimposable on the original molecule? What is the relationship between the two drawings of 1,3-dichloro-1,2-propadiene? Explain. Note: no credit will be given for answers without explanations.
2. Draw a 3D Model or build one using model set of CHBrCIF. (2 points) Build (or Draw) a model of the mirror image of your first molecule. ii. What is the relationship between the two models of CH BrCl related?
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...
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...
1. Construct a model that has a central carbon atom with 4 different colored spheres attached to it, representing four different atoms or groups. Draw a solid/dashed-wedge structure of this model here and answer the following questions. C (a blue ball) D Fig. 1 B 2. Reconstruct the original stereogenic carbon with the four different colored balls again. Set the model on the table so that the blue ball (C In the Fig 1) points upwards. a. Looking down on...
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?...
Figure 2: How many chiral carbons does this model have? a Does this model have a plane of symmetry? Rotate the central bond to see b. possible conformations before answering/ Yes No Make the mirror image model of this molecule. Are the mirror images identical? Yes No C. dl What is the term for the relationship between these structures? Are these structures chiral €or achiral? Switch two of the groups on one of the carbons of one model, resulting 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...
3. Cyclic compounds The presence of the ring in all but very large ring cyclic molecules prevents full rotation of the ring atoms. For this reason, stereoisomerism may also occur in cyclic molecules. a) Prepare a model of cyclohexane, C6H12. Draw the condensed formula. b) Build a model of methylcyclohexane (C7H14) by replacing one of the hydrogens of cyclohexane with a methyl group. Draw the skeletal formula for methylcyclohexane. 2 c) How many different isomers exist for methylcyclohexane (CyH34)? d)...
2. (6 points) 1,3-Dichloro-1,2-propadiene is shown below. Draw the mirror image of this molecule. Is the mirror image superimposable on the original molecule? What is the relationship between the two drawings of 1,3-dichloro-1,2-propadiene? Explain. Note: no credit will be given for answers without explanations.
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