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Chapter 3
1. Is the indicated compound acting an acid or a base in the following reaction?
O+
O
OH
O
+
A. Acid
B. Base
C. Neither
2. Is the indicated compound acting an acid or a base in the following reaction?
+H2SO4O+HSO4O
H
A. Acid
B. Base
C. Neither
3. Is the indicated compound acting an acid or a base in the following reaction?
+
H2SO4O+HSO4O
H
A. Acid
B. Base
C. Neither
4. Is the indicated compound acting an acid or a base in the following reaction?
O
O
+H2SO4+HSO4
O
OH
A. Acid
B. Base
C. Neither
5. Is the indicated compound acting an acid or a base in the following reaction?
O
O
OH
O
+
+
A. Acid
B. Base
C. Neither
6. Provide a definition of a Bronsted-Lowry acid.
7. What is the conjugate base of the following acid?
H2O
8. What is the conjugate base of the following acid?
NH4
9. Which of the following is the conjugate base of the following acid?
SH3
SH2
A. B. C. D.
SH3SH2OH
10. Which of the following is the conjugate acid of the following base?
NH2
A. B. C. D. NH-2
NH3
NH4NH3
11. What is an ionic reaction?
12. In the following reaction, identify the acid and base as well as the conjugate acid
and base.
OH
Na OH
ONa
H2O
++
13. Which is the conjugate acid in the following reaction?
OH
Na OH
ONa
H2O
++
OH
Na OH
ONa
H2O
A. B. C. D.
14. Which is the conjugate base in the following reaction?
OH
Na OH
ONa
H2O
++
OH
Na OH
ONa
H2O
A. B. C. D.
15. Draw arrows to indicate the movement of electrons in the following reaction.
OH H2O
+
NH3
NH4+
16. Draw arrows to indicate the movement of electrons in the following reaction.
H
NH2
NH3
17. What is wrong with the following arrow?
H
NH2
NH3
+
A. It should start on the alkyne carbon.
B. It should start on a hydrogen attached to the nitrogen.
C. It should start on the anion on nitrogen, end at the H on the alkyne, and a second
arrow should start at the bond between the C and H on the alkyne and end on the terminal
carbon of the alkyne.
D. There should be two arrows – one from nitrogen and one from the alkyne carbon.
18. What is wrong with the following arrow? Please draw the correct mechanism.
H
NH2
NH3
19. Identify the acid and the base and draw the mechanism.
O
OH
OH2O
H
20. Identify the acid and the base and draw the mechanism.
O
H3O
O
H
H2O
21. Identify the acid and the base and draw the mechanism.
H3O
H2O
OO
H
22. Identify the acid and the base and draw the mechanism.
OO
NH2
NH3
23. Identify the acid and the base and draw the mechanism.
H2O
HOH
24. Which of the following is the most acidic?
A. B. C. D.
HCl Cl H2ONH3
25. Which of the following is the most acidic?
A. B. C. D. NH3
OO
O
O
OH
26. Which of the following is most basic?
A. B. C. D.
HCl Cl H2ONH3
27. Which of the following is the most basic?
A. B. C. D. NH3
OO
O
O
OH
28. Which side will the following acid-base reaction favor?
OOH OH2O
H
++
A. The right
B. The left
C. Neither
29. Which side will the following acid-base reaction favor?
H3OH2O
OO
H
++
A. The right
B. The left
C. Neither
30. Which side will the following acid-base reaction favor?
O
OH OH
O
O
H2O
+ +
A. The right
B. The left
C. Neither
31. Provide the correct Keq for the following reaction.
OH3OO
H2O
++
32. Which of the following is the correct Keq for the following reaction?
OH3OO
H
H2O
++
O
H
H2O
OH3O
OH3O
O
H
H2O
O
H
OH3O
O
O
H
A. B.
D.
C.
33. What is the difference between Ka and pKa?
34. Which side will the following acid-base reaction favor?
O
NH2
O
NH3
H2O
+ +
H3O
A. The right
B. The left
C. Neither
35. Which side will the following acid-base reaction favor?
O
NH2
OH
O
NH
H2O
+ +
A. The right
B. The left
C. Neither
36. Which side will the following acid-base reaction favor?
H3C+H2OH4C+OH
A. The right
B. The left
C. Neither
37. Which side will the following acid-base reaction favor?
H3C+H4C+
H
A. The right
B. The left
C. Neither
38. Which of the following is the strongest acid?
A. HF
B. HBr
C. HCl
D. HI
39. Which of the following is the strongest acid?
A. HOMe
B. HSMe
C. HSeMe
D. HTeMe
40. Which of the following is the strongest acid?
A. B. C. D.
O
OH
O
OH
O
OH
O
OH
Cl Br F
F
41. Which of the following is the strongest acid?
A. B. C. D.
O
OH
O
OH
O
OH
O
OH
Cl F I
42. Which of the following indicated H’s is the most acidic?
A. B. C. D.
H
H
HCH3H
43. What are two factors that influence the acidity of a compound?
