Unit 3 Target 2: pH Quiz
- 1.Which solution has the greatest concentration of hydroxide ions (OH-)?
- A.
Urine (pH 6.0)
- B.
Rainwater (pH 5.5)
- C.
Tomato juice (pH 4.0)
- D.
Gastric juice (pH 2.0)
- 2.When the pH in a stomach increases from 2 to 4, how does the hydrogen ion concentration change?
- A.
It increases by a factor of 2.
- B.
It increases by a factor of 100.
- C.
It decreases by a factor of 2.
- D.
It decreases by a factor of 100.
- 3.As part of an experiment, a student adds 10 mL of 5% hydrochloric acid solution to 100 mL of a non-buffered, colorless solution of sugar. What is the most likely result?
- A.
The concentration of hydroxide ions (OH-) will increase.
- B.
The concentration of hydrogen ions (H+) will increase.
- C.
The pH will not change.
- D.
The pH will increase.
- 4.Which of the following statements is true concerning acids and bases?
- A.
Acids and bases don't react with each other
- B.
Acids mixed with bases neutralize each other
- C.
Acids mixed with bases make stronger bases
- D.
Acids mixed with bases make stronger acids
- 5.Which is the correct set of acid properties?
- A.
Sour taste, corrosive, change litmus from red to blue
- B.
Sour taste, corrosive, change litmus from blue to red
- C.
Sweet taste, slippery, change litmus from blue to red
- D.
Sour taste, slippery, change litmus from blue to red
- 6.Netural solutions have a pH of
- A.
0
- B.
7
- C.
9
- D.
14
- 7.Which is true?
- A.
PH of less than 7 is basic; pH of more than 7 is acidic
- B.
PH of less than 7 is acidic; pH of more than 7 is basic
- 8.If a solution has 345,000 H+ at a pH of 3, how many H+ would there be at a pH of 5?
- A.
345
- B.
3,450
- C.
34,500,000
- D.
3,450,000
- E.
34,500
- 9.If a solution has 640,000 OH- at a pH of 8, how many OH- would there be at a pH of 9?
- A.
6,400
- B.
64,000,000
- C.
6,400,000
- D.
64,000
- E.
640
- 10.If a solution has 2,800 H+ at a pH of 8, how many H+ would there be at a pH of 5?
- A.
280
- B.
2.80
- C.
28,000
- D.
280,000
- E.
2,800,000
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