Question

3. Vinegar (CH₃COOH) is considered a weak acid because

a. it releases a small percentage of hydrogen ions in water

b. it contains an OH- function group

c. it releases a small percentage of OH- in water

it contains four hydrogen atoms

4. an acid is a substance that___ when added to water

a. produces hydroxide atoms

b. raises the pH of the solution

c. produces hydrogen atoms

d. produces hydronium ions

5. which of the following is an acid?

a. NaCl

b. NH3

c. CH4

d. NaOH

e. HNO3

6. A substance that is composed of a metal plus a hydroxide is a(n)

a. acid

b. Oxide

c. salt

d. base

7. A substance that is composed of a metal plus a nonmetal is a(n)

a. acid

b. Oxide

c. salt

d. base

8. in acid-base reactions, H2O___

a. can act either as a base or an acid

b. can act as a base

c. cannot act as an acid or a base since it is neutral

d. can act as an acid

9. When dissolved in water, bases produce___

a. H+ ions

b.salts

c.OH- ions

d. H3O+ ions

e. Hydronium ions

10. Which of the following does not describe an acid?

a. acids react with bases

b. acids donate hydroxide ions in water

c. acids donate hydrogen ions in water

d. acids are sour tasting

11. Which of the following is NOT a property of scids

a. they react wih bases

b. they react with metals to form water

c. they have a sour taste

d. they release hydrogen ions in solution

12. which of the following is NOT a property of acids?

a. they react with babes

b. they feel slippery to the touch

c. they release hydrogen ions in solution

d. they have a pH of less than 7

13. The pH of a lemon (citric acid) is___

a. Cannot be determined

b. equal to 7

c. greater than 7

d. less than 7

14. Many medicines have a bitter taste which manufacturers attempt to disguise. These medicines are probably

a. salts

b. neutral

c. acids

d. bases

16. Acid rain has a pH value near

a. 1

b. 10

c. 7

d. 4

e. 6

17. Rainwater is naturally slightly acidic due to the ___ in the atmosphere that reacts with water to form___

a. O2, acetic acid

b. CO2, carbonic acid

c. SO2, sulfuric acid

d. N2, nitric acid

e. NO, formic acid

18. Consider the following statements.
A. Substances that give up or create hydroxide ions in a water solution are called acids.
B. A solution is a heterogeneous mixture.
C. Solutions with a pH above 7 are basic.
Which of the statements is/are true?

a. C only

b. A and C only

c. A only

d. B only

e. None is true

f. B and C only

g. All are true

h. A and B only

19. An unknown substance is added to a solution and the pH decreases.
The substance is best described as a(n)

a. acid

b. solvent

c. base

d. salt

20. An unknown substance is added to a solution and the pH increase.
The substance is best described as a(n)

a. acid

b.salt

c.base

d.solvent

21. A patient suffering from acid indigestion took an antacid that reduced the acidity in his stomach to 1/10 of the original value.
If the pH of his stomach was 1 before the medicine, what was it after taking the medicine?

a. 0.9

b.2.0

c.1.1

d.1x10^2

e. 0

22. Acid rain typically has a pH of___

a. greater than 8.0

b. exactly 7.0

c. less than 6.0

d. exactly zero

23. Combustion of coal with sulfur in it leads to SO₂ being emitted into the atmosphere.
This leads to what end product in moist environments?

a. sulfur trioxide

b. sulfuric acid

c. photochemical smog

d. photochemical smog and sulfuric acid

e. sulfur dioxide

24. What is the major pollutant causing acid rain?

a. ozone, O3

b. sulfur dioxide, SO2

c. radioactive hydrogen, H

d. acetic scid, HC2H3O2

e. carbonic acid, H2CO3

25. Which substance reacts with water vapor in the atmosphere to produce acid rain?

a. NH3

b.PbO

c.SO3

d.NaCl

Answer 1

3. (a) it releases a small percentage of hydrogen ions in water

4. (d). produces hydronium ions

5. (e) HNO3

6. (d) base

7. (c) salt

8. (a) can act either as a base or an acid

9. (c)  OH- ions

10. (b)  acids donate hydroxide ions in water

11. (b) they react with metals to form water

12. (b) they feel slippery to the touch

13. (d) less than 7

14.(c) acids

16. (d) 4

17. (b) CO2, carbonic acid

18. (b) A and C only

19. (a) acid

20. (c) base

21. (c) 1.1

22. (c) less than 6.0

23. (b)  sulfuric acid

24. (e) carbonic acid, H2CO3

25. (c) SO3