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D. Butane The formula for butane is C4H10. From you model of propane, construct all possible isomers of butane by replacing a hydrogen with a methyl group. How many isomers of butane are there? Give their structural formula and IUPAC names. There are four isomers corresponding to the formula C4H,CI. Write their structural formulas and name them. How many isomers of C4H8Cl2 are there? Use your model to help answer the question. Draw their formula and name all the isomers of C4H8Cl2. 5. Draw the structural formulas and names for all the isomers of butane. 6. Draw the structural formulas and names for all the isomers of: a. C4H8CI b. C4H8Cl2

D. Butane The formula for butane is C4H10. From you model of propane, construct all possible isomers of butane by replacing a hydrogen with a methyl group. How many isomers of butane are there? Give their structural formula and IUPAC names. There are four isomers corresponding to the formula C4H,CI. Write their structural formulas and name them. How many isomers of C4H8Cl2 are there? Use your model to help answer the question. Draw their formula and name all the isomers of C4H8Cl2. 5. Draw the structural formulas and names for all the isomers of butane. 6. Draw the structural formulas and names for all the isomers of: a. C4H8CI b. C4H8Cl2

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D. Butane The formula for butane is C4H10. From you model of propane, construct all possible isomers of butane by replacing a hydrogen with a methyl group. How many isomers of butane are there? Give their structural formula and IUPAC names. There are four isomers corresponding to the formula C4H9CI. Write their structural formulas and name them. How many isomers of C4H8Cl2 are there? Use your model to help answer the question. Draw their formula and name all the isomers of C4H8Cl₂. 5. Draw the structural formulas and names for all the isomers of butane. 6. Draw the structural formulas and names for all the isomers of: a. C4H8CI b. C4H8Cl2 E. Pentane Use your models in a systematic manner to determine how many isomers there are for the formula C5H12. Draw their structural formulas and name them. Draw and name all of the isomers of C5H11Cl. Give the pure IUPAC name and the name using IUPAC reserved names for certain substituents. 7. Draw the structural formulas and names for all the isomers of C5H12. 8. Draw the structural formula and names for all the isomers of C5H11CI.
Transcribed Image Text:D. Butane The formula for butane is C4H10. From you model of propane, construct all possible isomers of butane by replacing a hydrogen with a methyl group. How many isomers of butane are there? Give their structural formula and IUPAC names. There are four isomers corresponding to the formula C4H9CI. Write their structural formulas and name them. How many isomers of C4H8Cl2 are there? Use your model to help answer the question. Draw their formula and name all the isomers of C4H8Cl₂. 5. Draw the structural formulas and names for all the isomers of butane. 6. Draw the structural formulas and names for all the isomers of: a. C4H8CI b. C4H8Cl2 E. Pentane Use your models in a systematic manner to determine how many isomers there are for the formula C5H12. Draw their structural formulas and name them. Draw and name all of the isomers of C5H11Cl. Give the pure IUPAC name and the name using IUPAC reserved names for certain substituents. 7. Draw the structural formulas and names for all the isomers of C5H12. 8. Draw the structural formula and names for all the isomers of C5H11CI.
F. Cycloalkanes Cycloalkanes corresponding to the formula CnH2n exist. Using springs for single bonds, construct models of cyclopropane, C3H6; cyclobutane, C4H8. Although cyclopropane and cyclobutane exist, would you anticipate these to be highly stable molecules? Now, using wooden pegs for bonds, carefully construct models for cyclopentane, C5H10; and cyclohexane, C6H12 - not all of the atoms will lie in the same plane. How many isomers of 1,2-dichlorocyclopentane are there? The answer may not be obvious, but there are three. If you cannot convince yourself that there are three, check with your laboratory instructor. Two of the three will be mirror images of each other. This is another aspect of isomerization that is most significant in organic chemistry, and will be addressed in the study of stereochemistry. 9. Using the following format for the structure of cyclopentane, give the structure for all three isomers of 1,2-dichlorocyclopentane. 7 cis CHEM 2423 Lab / Fall 2004 NLC Chemistry Dept trans trans p. 13 G. Alkenes Using two springs to represent a double-bond, construct a model of ethene (ethylene), C₂H4. Note the rigidity of the molecule; note that there is no rotation about the carbon-carbon double-bond as there is for a carbon-carbon single-bond, such as in ethane or propane. How many isomers are there corresponding to the formulas C₂H3CI? C2H₂Cl2? Draw the formulas and name them. 10. Give the structures and names of all isomers of C₂H₂Cl2.
Transcribed Image Text:F. Cycloalkanes Cycloalkanes corresponding to the formula CnH2n exist. Using springs for single bonds, construct models of cyclopropane, C3H6; cyclobutane, C4H8. Although cyclopropane and cyclobutane exist, would you anticipate these to be highly stable molecules? Now, using wooden pegs for bonds, carefully construct models for cyclopentane, C5H10; and cyclohexane, C6H12 - not all of the atoms will lie in the same plane. How many isomers of 1,2-dichlorocyclopentane are there? The answer may not be obvious, but there are three. If you cannot convince yourself that there are three, check with your laboratory instructor. Two of the three will be mirror images of each other. This is another aspect of isomerization that is most significant in organic chemistry, and will be addressed in the study of stereochemistry. 9. Using the following format for the structure of cyclopentane, give the structure for all three isomers of 1,2-dichlorocyclopentane. 7 cis CHEM 2423 Lab / Fall 2004 NLC Chemistry Dept trans trans p. 13 G. Alkenes Using two springs to represent a double-bond, construct a model of ethene (ethylene), C₂H4. Note the rigidity of the molecule; note that there is no rotation about the carbon-carbon double-bond as there is for a carbon-carbon single-bond, such as in ethane or propane. How many isomers are there corresponding to the formulas C₂H3CI? C2H₂Cl2? Draw the formulas and name them. 10. Give the structures and names of all isomers of C₂H₂Cl2.
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