ANSWER KEY

130BL FINAL EXAM

Instructor: Dr. John K.M. Mouser

June 7th, 1999, Winter Quarter

1.

(1.0 g) / (210 g/mole) = 4.76x10-3 moles

4.76x10-3 moles x 22.4 liters/mole = 0.107 L

Thus, 0.11 liters or 110 mL.

2.

3. One set of electrons is orthogonal to the aryl ring and cannot participate in the pi system. Thus the aryl ring consist of 6 pi electrons which is a Hückel number.

4. SO2 and 2 HCl

5. HCl and acetic acid

6. Exact Mass = 181.0375

7.

a. Mol. Wt.: 177.08 (not Exact Mas =176.0401

b. C7H13Br

c. 176 m/z peak

d.

e.

Peak at 83

Peak at 97

Peak at 179