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Quiz I Key - Dr Manashz Chatterjee Spring 2008 Chem 30A...

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Unformatted text preview: Dr. Manashz' Chatterjee Spring 2008- Chem 30A Quiz # I L t F' t - N;er Student ID Number : Name of your TA: (Please Circle) Aaron/ Jesus / Kyle / Ronald Discussion Section — Day : Time: Chem 30 A Spring 2008 Quiz # I (15 mins) Wednesday April 9, 2008 “ Total: /35 Be C N F Ne 15 Mg Al Si P 3 c1 Ar 1.2 1.5 1.8 2.1 2.5 3.0 1.0 1.6 1.8 2.0 2.4 2.8 1.0 1.7 1.8 1.9 2.1 2.5 Electronegativity values for some atoms (Pauling scale) DO NOT OPEN THIS EXAM UNTIL INSTRUCTED TO DO SO Dr. Manashi Chatterjee Spring 2008— Chem 30A Quiz # I 1. (6 points) Specify the hybridization at the items (atoms) arrowed. \\c\/\$/ (kekmhcabml> - w a+0m wiH" C rt banal lulffndg C “Gm-“l- PM“) 2. (2 points) Identify which of the following compound is a tertiary amine? CH3 Answer is i U H30/ I \NHZ N N \ H3C/ \H H—CEl‘l awidL CH3 CH o by 3 3 a b c amine d 1° amine. RUN'H ng'R R’ A l 3. (2 points) What is the correct structure for the ketone which has the formula C4H30? C H 0 M‘pw OH O O 5 to O (A) (B) (C) (D) Answer is: B chwo Dr. Manashz' Chatterjee Spring 2008- Chem 30A Quiz # I 4. (5 points) Unshared, or lone electron pairs play an important role in determining the chemical and physical properties of organic compounds. Use the structural formulas below to determine the number of unshared pairs at each designated atom. Be sure your answers are consistent with the formal charges on the formulas. T <9 'o O CH H c/ \c/ 3 H 3 ¢ I \O/ ' l a H ' ’ The number of unshared electron pairs on atom a is 1 The number of unshared electron pairs on atom b is 7— b 5. (10 points) Draw two resonance forms for each of the molecules. Draw proper curved arrows to show movement of electrons. me a' n resonance ca / we, gave Pl'S For this Shuckurc this Hume Dr. Manashi Chatterjee Spring 2008- Chem 30A Quiz # I 6. (10 points) Circle and Name (next to the circle) all the functional groups that are present in the molecule shown below. or, ()5 \f 546‘ x00.) Mel-‘53) a . o L\09 7. am” k \ 0 o; C not aluo N33; ' VP“ kennel o 0‘ OH l> r), alum— ...
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