CH 201
Exam #1
September 29, 2000

Name ______________________________

Page

Points

1

______(12)

2

______(08)

3

______(17)

4

______(20)

5

______(09)

6

______(21)

7

______ (13)

Total

______(100)

1. In the molecule below describe the types of orbitals which overlap to form the bond indicated.

(6 pts)

b

C

C

C

H

CH2

H

H

c

O

CH3

a

a. The atomic orbitals used to form this bond are an ________ and an _________.
b. The atomic orbitals used to form this bond are an ________ and an _________.
c. The atomic orbitals used to form the sigma (σ) bond are an ________ and an _________.

2. Write the molecular formula for each of the following compounds on the line below them (6 pts).

HO

N

O

O

1

3. Write the functional group present in each of the following molecules. (8 pts)

O

CH3

O

H3C

O

C

CH2

NH2

C

C

CH2CH3

H3CH2C

N

CH2

CH2

CH3

CH3

H3C

O

C

O

H

H3C

O

C

CH2

OH

O

2

4. In each of the following structures or pairs of structures, which of the indicated bonds (1 or 2) is the
shorterone. (6 pts)

OH

H3C

OH

CH3

CH3

H
C

C

H2C

C
H2

CH

H

C

C

H

1

2

1

2

1

2

a..

b.

c.

6. Put in the proper formal charges in the following structures (i.e. clearly write the charge near the
appropriate atom). (8 pts)

O
••

N

O
••

O

H

N

H

H

CH2

O

O
••

H3C

S

O

O

O
••

••

••

••
N

O

C

••

7. Provide the molecular formulas for the following:(3 Pts)

Carbonic Acid _______________

Acetic Acid_________________

Bicarbonate _________________

3