8B_quiz2a_key

8B_quiz2a_key - Chem 8B winter 2008 Quiz#2A Name_KEY(Last...

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Chem 8B, winter 2008 Name: ____ KEY _______________ Quiz #2A (Last, First) ( print clearly) TA or section: _________________________ • DO NOT start the quiz until you are instructed. • You must stop writing and turn in your quiz when time is called. • Ambiguous or incomplete answers will not get full credit. • Please give clear and concise answers – a single sentence or phrase should be sufficient to accurately convey the information required. “Brevity is the soul of wit” – Shakespeare Problem # Score 1. [12] ________ 2. [12] ________ 3. [10] ________ 4. [6] ________ Total [40] ________/40 Bonus [5] _________
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Chem 8B, quiz 2A 1. Please indicate true (T) or false (F) for the following statements based on lab and lecture materials (2 pts each): (the highlighted phrases are the “false” parts….) __ F __ In general, any substitutent that has a lone pair of electrons on the atom directly bonded to the aromatic ring is a meta director. __ F __ A more stable carbocation intermediate will have a higher activation energy barrier for its formation. __ T __ Phenol is more acidic than isopropyl alcohol because the conjugate base of phenol (a phenoxide ion) is resonance-stabilized by the aromatic ring. __ F __ Sulfonation, nitration and chlorination reactions have different nucleophile components, but benzene remains constant as the electrophile. __ T
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8B_quiz2a_key - Chem 8B winter 2008 Quiz#2A Name_KEY(Last...

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