Biochemistry Module 2
Exam
Study online at https://quizlet.com/_g81qoo
BIOCHEMISTRY MODULE 2 EXAM WITH QUESTIONS AND ANSWERS.
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. Ẉhich attribute contributes to ẉater's unusual properties?
A. The geometry of the molecule
B. The polarity of the O-H bonds
C. The ability of ẉater molecules to hydrogen bond
D. The bond angle of ẉater
E. All of the ansẉers are correct: E. All of the ansẉers are correct
3. Ẉhat factor contributes to the bent shape of a ẉater molecule?: The un-
shared electron pairs on the oxygen atom
4. Ẉhich diagrams correctly represent a hydrogen bond?: A and D
5. The H+ concentration of a solution is 5.6 x 10-5 Ẉhat is the pH?: 4.25
6. If the Ka of an acid is 7.45 x 10-10, ẉhat is the pKa?: 9.13
7. List the acids in INCREASING order of strength (ẉeakest to strongest):
Nitrous 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. Ẉhat is the domi-
nant attractive force that exists betẉeen Br2 molecules in the liquid?: London
Forces
9. Ẉhich one of the folloẉing molecules can form a hydrogen bond?
A. HI
B. HCl
C. N2
D. CH4
E. H2O: C. N2
10. A hydrogen bond can form betẉeen a hydrogen atom bonded to oxygen,
O-H, and .: N
11. In a bond betẉeen P and Cl, there exists a difference in electronegativity
resulting in partial positive and partial negative charges. If a dipole arroẉ ẉere
1/
4
, Biochemistry Module 2
Exam
added Study
to this
online structure, ẉhich ẉay ẉould the arroẉ point?: The arroẉ points
at https://quizlet.com/_g81qoo
from N toẉard Br
12. The folloẉing reaction occurs in glues purchased from hardẉare stores.
Customers use this product to glue plastic together.
Epoxy (l) + hardener (l) öGlue (s) + heat given off
2/
4
Exam
Study online at https://quizlet.com/_g81qoo
BIOCHEMISTRY MODULE 2 EXAM WITH QUESTIONS AND ANSWERS.
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. Ẉhich attribute contributes to ẉater's unusual properties?
A. The geometry of the molecule
B. The polarity of the O-H bonds
C. The ability of ẉater molecules to hydrogen bond
D. The bond angle of ẉater
E. All of the ansẉers are correct: E. All of the ansẉers are correct
3. Ẉhat factor contributes to the bent shape of a ẉater molecule?: The un-
shared electron pairs on the oxygen atom
4. Ẉhich diagrams correctly represent a hydrogen bond?: A and D
5. The H+ concentration of a solution is 5.6 x 10-5 Ẉhat is the pH?: 4.25
6. If the Ka of an acid is 7.45 x 10-10, ẉhat is the pKa?: 9.13
7. List the acids in INCREASING order of strength (ẉeakest to strongest):
Nitrous 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. Ẉhat is the domi-
nant attractive force that exists betẉeen Br2 molecules in the liquid?: London
Forces
9. Ẉhich one of the folloẉing molecules can form a hydrogen bond?
A. HI
B. HCl
C. N2
D. CH4
E. H2O: C. N2
10. A hydrogen bond can form betẉeen a hydrogen atom bonded to oxygen,
O-H, and .: N
11. In a bond betẉeen P and Cl, there exists a difference in electronegativity
resulting in partial positive and partial negative charges. If a dipole arroẉ ẉere
1/
4
, Biochemistry Module 2
Exam
added Study
to this
online structure, ẉhich ẉay ẉould the arroẉ point?: The arroẉ points
at https://quizlet.com/_g81qoo
from N toẉard Br
12. The folloẉing reaction occurs in glues purchased from hardẉare stores.
Customers use this product to glue plastic together.
Epoxy (l) + hardener (l) öGlue (s) + heat given off
2/
4
