1. Question (Clickers) Which of the following does not belong: Acids...
...turn litmus paper pink.
...taste sour.
...feel slippery.
...decrease the pH when dissolved in water. C

2. Question (Clickers) Which of the following does not belong: Bases...
...turn litmus paper blue.
...taste sour.
...feel slippery.
...increase the pH when dissolved in water. B

3. Questions (Clickers) The conjugate base for HCl is Cl- NaCl OH- HCl

4. Questions (Clickers) The conjugate acid for H2PO4- is HPO42- H3PO4
H3O+
HCl B

5. Questions (Clickers) In the following reaction species A is the
acid in the forward direction.
base in the forward direction.
acid in the reverse direction.
base in the revers direction. A

6. Questions (Clickers) In the following reaction species C is the
acid in the forward direction.
base in the forward direction.
acid in the reverse direction.
base in the revers direction. D

7. Question
Write the equilibrium constant expression for the following reaction:

8. Question
Write the equilibrium constant expression for the following reaction:

9. Question
When steam is passed over coal and allowed to come to equilibrium at 800°C, the equilibrium constant for the reaction has a value of 8.1 x 10-2.
Explain why the concentration of water appears in the equilibrium constant expression for this reaction, when it is usually omitted from such equations.
Write the equilibrium constant expression for the reaction.
Which are there more of at equilibrium, reactants or products?

10. Question (Clicker)
Hydrochloric acid, HCl, is a strong acid. What is the pH of a M solution of HCl?
0.001
3.0
1 x 10-3
100 B

11. Question (Clicker)
Hydrochloric acid, HCl, is a strong acid. What is the pH of a x 10-4 M solution of HCl?
2.35
4.0
100
3.63 D

12. Question (Clickers)
Using the data in Table 9.4, which of the following is the strongest acid?
HCO3-
CH3COOH
NH4+ HF D

13. Question (Clickers)
Using the data in Table 9.4, which of the following is the strongest base?
HCO3-
CH3COO-
NH3 F- C

14. Question
If 35.0 mL of M KOH are required to titrate 45.0 mL of a HCl solution, what is the concentration of the HCl solution?

15. Questions (Clicker)
Adding NaOH to an acetate buffer will lead to the increase in the concentration of which of the following components.
CH3COOH
CH3COO-
H3O- B

16. Questions
A buffer can be prepared using lactic acid and its conjugate base, lactate.
At what pH does the lactate buffer system buffer best at?
Write an equation for the reaction that takes place when a strong acid (H3O-) is added to this buffer.
Write equations for the reactions that take place when a strong base (OH-) is added to this buffer.