Choose the correct answer for each question. You may use a periodic table as a reference.

1. Calculate the pH of an acid soution containing 0.10M HNO₃

   1.   ?    0.10
   2.   ?    -1.00
   3.   ?    1.00
   4.   ?    7.00
   5.   ?    none of these

2. A solution has a pH of 6.49. The pOH of this solution is

   1.   ?    7.51
   2.   ?    6.49
   3.   ?    6.51
   4.   ?    3.2x10^-6
   5.   ?    none of these

3. Choose the [H₃O⁺] that corresponds to a pH of 6.49.

   1.   ?    6.49x10¹M
   2.   ?    3.2x10^-7M
   3.   ?    3.2x10^-6M
   4.   ?    0.49x10⁶M
   5.   ?    none of these

4. The pH of a solution in which [OH^-] = 3.4x10^-5M is

   1.   ?    4.47
   2.   ?    10.47
   3.   ?    9.53
   4.   ?    6.34
   5.   ?    none of these

5. Which one of the following describes a Bronsted-Lowry base.

   1.   ?    Produces OH^- in solution
   2.   ?    Produces H⁺ in solution
   3.   ?    Is a proton donor
   4.   ?    Is a proton acceptor

6. Which one of the following pairs would make a good buffer solution?

   1.   ?    HCl and NaCl
   2.   ?    HC₂H₃O₂ and KC₂H₃O₂
   3.   ?    H₂SO₄ and NH₃
   4.   ?    HNO₃ and KNO₃
   5.   ?    HCN and NaOH

7. A solution whose pH is 3 is how many times more acidic as a solution whose pH is 6?

   1.   ?    2
   2.   ?    100
   3.   ?    10
   4.   ?    1000
   5.   ?    6

8. A solution is prepared by dissolving 36.5g of HCl_(g) in enough water to make 1.0L of solution. The pH of this solution is

   1.   ?    1.00
   2.   ?    -1.00
   3.   ?    14.00
   4.   ?    0
   5.   ?    none of these

9. Which one of the following will make a base when dissolved in water?

   1.   ?    CaO
   2.   ?    SO₃
   3.   ?    CO₂
   4.   ?    NO
   5.   ?    SO₂

10. What is the charge on a hydronium ion?

    1.   ?    2-
    2.   ?    1-
    3.   ?    0
    4.   ?    1+
    5.   ?    2+

11. What is the hydronium ion concentration of pure water?

    1.   ?    1.0
    2.   ?    1.0x10^-2
    3.   ?    1.0x10⁵
    4.   ?    1.0x10^-7
    5.   ?    Impossible to determine from the information given.

12. What is a property of a base?

    1.   ?    bitter taste
    2.   ?    turns litmus paper from blue to red
    3.   ?    strong color
    4.   ?    unreactive
    5.   ?    nonelectrolyte

13. A solution with a pH of 6.5 is

    1.   ?    acidic
    2.   ?    basic
    3.   ?    neutral
    4.   ?    alkaline
    5.   ?    impossible

14. Which compound produces the lowest concentration of hydroxide ions in aqueous solution?

    1.   ?    sodium hydroxide
    2.   ?    lithium hydroxide
    3.   ?    ammonia
    4.   ?    potassium hydroxide
    5.   ?    All produce the same number of hydroxide ions.

15. Which compound would most likely be found in an antacid?

    1.   ?    ammonia
    2.   ?    potassium hydroxide
    3.   ?    sodium hydroxide
    4.   ?    aluminum hydroxide