ACS Review 3 Conformations of Alkanes and Cycloalkanes

ACS Review 3 Conformations of Alkanes and Cycloalkanes -...

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ACS Review Conformations of Alkanes and Cycloalkanes 1. Identify the conformation of butane shown below. A. anti B. gauche C. skewed D. eclipsed 2. What is the IUPAC name of the compound shown in the following Newman projection? A. 1,1,2,2-tetramethylethane B. 1,2-dimethylethane C. 2,2,3,3-tetramethylbutane D. 2,3-dimethylbutane 3. What is the IUPAC name of the compound shown below? A. 1,2,3-trimethylbutane B. 2,3-dimethylpentane C. 2,3,4-trimethylpentane D. 2-isopropylbutane 4. What is the dihedral (torsion) angle between the two bromine atoms in the following sawhorse drawing? A. 0 o B. 30 o C. 60 o D. 90 o
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5. At room temperature, the various conformations of butane: A. do not interconvert, only the anti form is present B. do not interconvert, but all conformations are present C. interconvert very slowly D. interconvert very rapidly 6. Which statement is correct concerning the relative stabilities of the two conformations, A and B, below? A. A is more stable. B. B is more stable. C. A and B are equal in stabilities. D. A and B are not equal in stability, but the preferred conformation cannot be determined by inspection. 7. Identify the spatial relationship of the two chlorine atoms. A. gauche B. anti C. eclipsed D. twist 8. Which statement is correct concerning the relative stabilities of the two conformations, A and B, below? A. A is more stable. B. B is more stable. C. A and B are equal in stabilities. D. A and B are not equal in stability, but the preferred conformation cannot be determined by inspection. 9. What is the IUPAC name of the following compound?
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A. trans -1,4-dimethylcyclohexane B. cis -1,4-dimethylcyclohexane C. trans -1,3-dimethylcyclohexane D. cis -1,3-dimethylcyclohexane 10. What is the dihedral (torsion) angle between the two bromine atoms in the wedge-and-dash drawing below?
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This note was uploaded on 12/17/2010 for the course CHEM 101 taught by Professor Silva during the Spring '08 term at Binghamton.

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ACS Review 3 Conformations of Alkanes and Cycloalkanes -...

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