Biochemistry Module 2 Exam Multiple Choices
Questions with Complete Correct Answers
Latest 2025/2026
1. The pH of a solution of 3.2 x 10-10 M NaOH is:
A. 3.7
B. 3.7 x 10-10
C. 4.5
D. 13
E. 8.7: C. 4.5
2. Which attribute contributes to water's unusual properties?
A. The geometry of the molecule
B. The polarity of the O-H bonds
C. The ability of water molecules to hydrogen bond
D. The bond angle of water
E. All of the answers are correct: E. All of the answers are correct
3. What factor contributes to the bent shape of a water molecule?: The un-
shared electron pairs on the oxygen atom
4. Which diagrams correctly represent a hydrogen bond?: A and D
5. The H+ concentration of a solution is 5.6 x 10-5 What is the pH?: 4.25
6. If the Ka of an acid is 7.45 x 10-10, what is the pKa?: 9.13
7. List the acids in INCREASING order of strength (weakest to strongest): Nitrous
1/4
, acid (Ka = 4.0 x 10-4); acetic acid (Ka = 1.7 x 10-5); phosphoric acid (Ka = 7.3 x
10-3): Acetic acid, nitrous acid, phosphoric acid
8. Elemental bromine (Br2) is a liquid at room temperature. What is the domi- nant
attractiṿe force that exists between Br2 molecules in the liquid?: London Forces
9. Which one of the following molecules can form a hydrogen bond?
A. HI
B. HCl
C. N2
D. CH4
E. H2O: C. N2
10. A hydrogen bond can form between a hydrogen atom bonded to oxygen, O-
H, and .: N
11. In a bond between P and Cl, there exists a difference in electronegatiṿity
resulting in partial positiṿe and partial negatiṿe charges. If a dipole arrow were added
to this structure, which way would the arrow point?: The arrow points from N
toward Br
12. The following reaction occurs in glues purchased from hardware stores.
Customers use this product to glue plastic together.
Epoxy (l) + hardener (l) öGlue (s) + heat giṿen off
2/4
Questions with Complete Correct Answers
Latest 2025/2026
1. The pH of a solution of 3.2 x 10-10 M NaOH is:
A. 3.7
B. 3.7 x 10-10
C. 4.5
D. 13
E. 8.7: C. 4.5
2. Which attribute contributes to water's unusual properties?
A. The geometry of the molecule
B. The polarity of the O-H bonds
C. The ability of water molecules to hydrogen bond
D. The bond angle of water
E. All of the answers are correct: E. All of the answers are correct
3. What factor contributes to the bent shape of a water molecule?: The un-
shared electron pairs on the oxygen atom
4. Which diagrams correctly represent a hydrogen bond?: A and D
5. The H+ concentration of a solution is 5.6 x 10-5 What is the pH?: 4.25
6. If the Ka of an acid is 7.45 x 10-10, what is the pKa?: 9.13
7. List the acids in INCREASING order of strength (weakest to strongest): Nitrous
1/4
, acid (Ka = 4.0 x 10-4); acetic acid (Ka = 1.7 x 10-5); phosphoric acid (Ka = 7.3 x
10-3): Acetic acid, nitrous acid, phosphoric acid
8. Elemental bromine (Br2) is a liquid at room temperature. What is the domi- nant
attractiṿe force that exists between Br2 molecules in the liquid?: London Forces
9. Which one of the following molecules can form a hydrogen bond?
A. HI
B. HCl
C. N2
D. CH4
E. H2O: C. N2
10. A hydrogen bond can form between a hydrogen atom bonded to oxygen, O-
H, and .: N
11. In a bond between P and Cl, there exists a difference in electronegatiṿity
resulting in partial positiṿe and partial negatiṿe charges. If a dipole arrow were added
to this structure, which way would the arrow point?: The arrow points from N
toward Br
12. The following reaction occurs in glues purchased from hardware stores.
Customers use this product to glue plastic together.
Epoxy (l) + hardener (l) öGlue (s) + heat giṿen off
2/4
