AP Chemistry Chapter 9 Quiz

AP Chemistry Chapter 9 Quiz 2016-2017 In the space provided, write the letter of the best answer for each of the following questions. (1 pts. each) _________1. How many equivalent resonance structures can be drawn for the molecule of SO3 without violating the octet rule on the sulfur atom? A) 5

B) 2

C) 1

D) 4

E) 3

D) 45

E) < 45

D) 5

E) 6

_________2. The bond angles in a trigonal planar molecule are __________ degrees. A) 109.5

B) 120

C) 90

2 _________3. The sp atomic hybrid orbital set accommodates __________ electron domains.

A) 2

B) 3

C) 4

H2 , results from the overlap of __________. _________4. The π bond in ethylene, HC 2 C 3

A) sp hybrid orbitals B) s atomic orbitals

C) sp hybrid orbitals

2

D) sp hybrid orbitals

E) p atomic orbitals

_________5. According to MO theory, overlap of two s atomic orbitals produces ________. A) one bonding molecular orbital and one hybrid orbital B) two bonding molecular orbitals C) two bonding molecular orbitals and two antibonding molecular orbitals D) two bonding molecular orbitals and one antibonding molecular orbital E) one bonding molecular orbital and one antibonding molecular orbital

In the space provided, show all of your work to answer each of the following questions. 6. (6 pts) Draw Lewis structures of the following molecules and explain why they are permitted (or expected) to violate the octet rule. A) BF3

B) IF5

7. (9 pts) Draw Lewis structures for the following molecules and predict the electron domain geometries and the molecular geometries. A) SF2

B) CO2

C) SO2

EDG:

EDG:

EDG:

MG:

MG:

MG:

10. 8. (4 pts) A) Draw a picture showing how 2 p orbitals on two different atoms can be combined to make a sigma bond.

B) Draw a picture showing how 2 p orbitals on two different atoms can be combined to make a pi bond.

9. (7 pts) Identify the hybridization of the carbon in each of the following structures. A)

H

C

C

H

B) H C

O

H

H C)

H C

C

C

H D)

C H

H

H

H H

10. (4 pts) Indicate the number of sigma and pi bonds present in each of the molecules in #9 (Consider all bonds).            

 

 B) 

 C) 

D) 

11. (5 pts) Draw a Molecular Orbital diagram of NO, label all of the orbitals, calculate the Bond Order and determine if the compound will be paramagnetic or diamagnetic. 