Practice Midterm 1

Practice Midterm 1 - Name: ____________________________ ID:

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Unformatted text preview: Name: ____________________________ ID: _____________________ 1/6 CHEMISTRY 140B 01/30/07 1st Midterm Exam Instructions: 1: This exam consists of 6 pages , including this page. ( Page #6 is blank). At the beginning of the examination period, put your name at the top of each page. 2. This exam accounts for 25% of the final grade (150 points total). 3. You can use the backside of each page, or page #6, as a scratch paper. However your final answers must be clearly written within the designated box that follows after each question. At the end cross out all unused space . 4. You may use pen or pencil. However exams completed with pencil will not be regraded. 5. The grades will be announced on Thursday 02/01/07. If you wish to have your exams regraded, you may submit them to me before 02/06/07. After 02/06/07 all grades are final. 6. The open pick-up exams will be available to you on Thursday 02/01/07 after the class from my assistant's office at Pacific Hall 5224B from 10:00am -5:00 pm everyday. 7. Read carefully the instructions for each problem. 8. Keep your eyes in your own exam!!! GOOD LUCK If you would like your exams left for open pick-up please sign here: ________________ Problem Points Score 1. 40 ________ 2. 40 ________ 3. 30 ________ 4. 40 ________ TOTAL 150 _______ Name: ____________________________ ID: _____________________ 2/6 Problem 1 (40 points) For each compound shown add the missing hydrogens where appropriate and then indicate: 1. expected number of signals in the 1 H NMR ; 2. expected number of signals in the proton decoupled 13 C NMR ; 3. expected splitting patterns for each peak in the 1 H NMR . H 3 C CH 3 H 3 C Br 1 H NMR signals: 13 C NMR signals: splitting patterns 1 H NMR: singlet quartet triplet example H H 3 4 as shown 1 H NMR signals: splitting patterns 1 H NMR: splitting patterns 1 H NMR: splitting patterns 1 H NMR: splitting patterns 1 H NMR: 13 C NMR signals: Cl CH 3 H 3 C Br CH 3 D 3 C O CH 3 H 3 C H O 1 H NMR signals: 13 C NMR signals: 1 H NMR signals: 13 C NMR signals: 1 H NMR signals: 13 C NMR signals: O Name: ____________________________ ID: _____________________ 3/6 Problem 2 (40 points)...
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Practice Midterm 1 - Name: ____________________________ ID:

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