Exam 1B Questions | Organic Chemistry | CHM 2210, Exams of Organic Chemistry

Download Exam 1B Questions | Organic Chemistry | CHM 2210 and more Exams Organic Chemistry in PDF only on Docsity! CHM 2210 – Section 4830 Name________________________________ Fall 2006 Exam 1B UFID________________________________ 1. (8 pts.) Draw a Lewis structure and three dimensional structure of the following compound (CH3OCH2CCCH2CHO) 2. (5 pts.) Draw the line angle structure of 4-chloro-trans-1,2-dimethylcyclopentane. 3. (10 pts.) Draw the line angle formulas of the following condensed structural formulas: 4. (5 pts.) Boron trifluoride (BF3) is a neutral molecule but is generally sold as boron trifluoride-diethyl etherate (the structure shown below). Write the formal charge of oxygen and boron in the space provided. O_______ B_______ Circle the one concept that best explains why boron trifluoride would be more stable in this form. resonance, electronegativity of oxygen, Hund’s rule, boiling point, octet rule 5. (6 pts.) The molecule shown to the right is called allene. a) How many sigma bonds does C-1 have_______? How many pi bonds_______? b) How many sigma bonds does C-2 have_______? How many pi bonds_______? c) What is the hybridization of C-1________? C-2________? 6. (13 pts.) Each of the compounds below contains 14 non-hydrogen atoms, making them about the same size. Dr. Reynolds wants you to go into the lab and determine which molecule will best mix with water. a) Name compound A:__________________________________________________________ b) Circle and name the functional groups in molecules A-C. c) Which compound would be the most soluble in water:________________ 7. (10 pts.) Draw the important resonance structure(s) of compound A shown below: In the spaces below, write the hybridization of the atom labeled with that number. 1_______ 2_______ 3_______ 4_______ 5_______ 6_______