midterm_2_313_2002

midterm_2_313_2002 - CHEMISTRY 313-02 MIDTERM # 2 October...

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CHEMISTRY 313-02 MIDTERM # 2 October 18, 2002 Name ..................................................................................... The total number of points in this midterm is 120. The total exam time is 120 min (2 h). Good luck! 1. (10 pts) Mark as true ( T ) or false ( F ) the following statements. Do not explain! Reactions occurring according to E1 mechanism have only one elementary step; More stable alkenes have larger heats of hydrogenation; More stable carbocations are generated faster; Carbocations are electrophiles; Alcohols are Brønsted bases; Alcohols are Brønsted acids; Primary alcohols are dehydrated faster than secondary alcohols; The rate-determining step is the fastest elementary step; Free radicals are electron deficient; Carbocations are electron deficient; 2. Circle ALL that apply: A. (3 pts) Free-radical chlorination: a. Occurs via a polar mechanism; b. Is a chain reaction; c. Requires an initiation step; d. Occurs fastest at primary positions; B. (3 pts) S N 1 reactions: a. Occur via carbocation intermediate; b. Have a bimolecular rate-determining step;
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This note was uploaded on 10/21/2010 for the course A a taught by Professor A during the Spring '10 term at American International.

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midterm_2_313_2002 - CHEMISTRY 313-02 MIDTERM # 2 October...

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