BIOCHEMISTRY MODULE 2 EXAM
PREPARATION TEST WITH
FREQUENTLY ASKED QUESTIONS AND
HIGHLIGHTED ANSWERS GRADED A+
2026
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 ANSWER >> C. 4.5
Kw=[OH][H]
pH=-log[H]
1
, 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 ANSWER >> E. All of the answers are correct
What factor contributes to the bent shape of a water molecule? ANSWER >> The
unshared electron pairs on the oxygen atom
Which diagrams correctly represent a hydrogen bond? ANSWER >> A and D
H-bonding:
Donors: OH, NH, FH
Acceptors: O, N, H
The H+ concentration of a solution is 5.6 x 10-5 What is the pH? ANSWER >> 4.25
-log[H]=pH
If the Ka of an acid is 7.45 x 10-10, what is the pKa? ANSWER >> 9.13
2
PREPARATION TEST WITH
FREQUENTLY ASKED QUESTIONS AND
HIGHLIGHTED ANSWERS GRADED A+
2026
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 ANSWER >> C. 4.5
Kw=[OH][H]
pH=-log[H]
1
, 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 ANSWER >> E. All of the answers are correct
What factor contributes to the bent shape of a water molecule? ANSWER >> The
unshared electron pairs on the oxygen atom
Which diagrams correctly represent a hydrogen bond? ANSWER >> A and D
H-bonding:
Donors: OH, NH, FH
Acceptors: O, N, H
The H+ concentration of a solution is 5.6 x 10-5 What is the pH? ANSWER >> 4.25
-log[H]=pH
If the Ka of an acid is 7.45 x 10-10, what is the pKa? ANSWER >> 9.13
2
