1. Chapter 16 Acid-Base Equilibria
Chemistry, The Central Science, 11th edition
Theodore L. Brown; H. Eugene LeMay, Jr.;
Bruce E. Bursten and Catherine J. Murphy
Chapter 16 Acid-Base Equilibria
Donna Narsavage Heald
Siena College
Loudonville, NY
 2009, Prentice Hall

2. Which base is the weakest?F–
NH3
OH–
SO42–
C2H3O2–

3. Which base is the weakest?F–
NH3
OH–
SO42–
C2H3O2–

4. Which acid is the strongest?
H2O
H3O+ HF
HC2H3O2
NH4+

5. Which acid is the strongest?
H2O
H3O+ HF
HC2H3O2
NH4+

6. Which base is the strongest?
NO3–
C2H3O2–
HCO3–
CO32–
NH3
Acid Ka

7. Which base is the strongest?
NO3–
C2H3O2–
HCO3–
CO32–
NH3
Acid Ka

8. If the pH = 2 for an HNO3 solution, what is the concentration of HNO3?
0.10
0.20
0.010
0.020
0.0010

9. If the pH = 2 for an HNO3 solution, what is the concentration of HNO3?
0.10
0.20
0.010
0.020
0.0010

10. If the pH = 10 for a Ca(OH)2 solution, what is the concentration of Ca(OH)2?
a digital pH meter
1.0 x 10–10
5.0 x 10–11
5.0 x 10–3
1.0 x 10–2
2.0 x 10–2

11. If the pH = 10 for a Ca(OH)2 solution, what is the concentration of Ca(OH)2?
a digital pH meter
1.0 x 10–10
5.0 x 10–11
5.0 x 10–3
1.0 x 10–2
2.0 x 10–2

12. A blue color will result when bromthymol blue is added to an aqueous solution of:
NH4Cl
KHSO4
AlCl3
KH2PO4
Na2HPO4

13. A blue color will result when bromthymol blue is added to an aqueous solution of:
NH4Cl
KHSO4
AlCl3
KH2PO4
Na2HPO4

14. What is the pH of a 0.010 M HClO4 solution?
<1 1 2 7
>7

15. What is the pH of a 0.010 M HClO4 solution?
<1 1 2 7
>7

16. What is the pH of a 0.010 M HF solution?
<1 1 2
>2 7

17. What is the pH of a 0.010 M HF solution?
<1 1 2
>2 7

18. Which acid is the strongest?
H2S HF
HCl
HBr HI

19. Which acid is the strongest?
H2S HF
HCl
HBr HI

20. Which base is the strongest?
ClO4–
BrO3–
BrO4–
IO3–
IO4–

21. Which base is the strongest?
ClO4–
BrO3–
BrO4–
IO3–
IO4–