Chapters 7 and 8 Test Answers – Flashcards
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What two atomic orbitals or hybrid atomic orbitals overlap to form the C-C ? bond in ethylene?
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C p + C p
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Rearrangements are likely to occur in which of the following reaction types?
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Both SN1 and E1 reactions
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Using Zaitsev's rule, choose the most stable alkene among the following.
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1,2-dimethylcyclohexene
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Which statement(s) is/are true of acid-catalyzed alcohol dehydrations?
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All 4 of the other choices
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Regarding the use of potassium tert-butoxide as a base in E2 reactions, it is incorrect to state that:
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it will form, predominantly, the more stable alkene.
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Carbon-carbon single bonds tend to be __________ and __________ than carbon-carbon double bonds.
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longer, weaker
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Carbocations are frequent intermediates in acidic reactions of alkenes, alcohols, etc. What do carbocations usually do? They may:
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do all the choices
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How many elements of unsaturation are implied by the molecular formula C6H12?
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1
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How many elements of unsaturation are implied by the molecular formula c5h8O?
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2
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Which of the alkyl chlorides listed below undergoes dehydrohalogenation in the presence of a strong base to give pent-2-ene as the only alkene product?
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3-chloropentane
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What two atomic orbitals or hybrid atomic orbitals overlap to form the C-H bond in ethylene?
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C sp2 + H s
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In the group shown below, which of the following alcohols is (are) likely to yield a product where skeletal rearrangement has occurred when treated with sulfuric acid? 3-methyl-3-pentanol, 3,3-dimethyl-2-butanol, 2,2-dimethylcyclohexanol
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both 3,3-dimethyl-2-butanol and 2,2-dimethylcyclohexanol
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Which of the following alkenes has the smallest molar heat of hydrogenation (ie, releases the least heat upon hydrogenation)?
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2,3-dimethyl-2-butene
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Which of the following alkenes has the largest molar heat of hydrogenation (ie, releases the most heat upon hydrogenation)?
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1-hexene
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What two atomic orbitals or hybrid atomic orbitals overlap to form the C-C ? bond in ethylene?
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C sp2 + C sp2
