PH Question Preview (ID: 2544)
Water Quality Attribute.
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How will organisms be affected if the pH of their environment changes and is now outside of their acceptable levels?
a) They will be stressed
b) They will stop feeding
c) They will stop reproducing
d) All of the above are correct answers
For bacteria to live in hot springs (such as at Yellowstone National Park), they must be adapted to what type of environment?
a) Basic
b) Alkaline
c) Acidic
d) Neutral
Which of the following best describes the pH scale?
a) Exponential
b) Logarithmic
c) Alphabetic
d) Aramaic
Which of the following can affect the pH of a body of water?
a) Minerals in the water
b) Algae that live in the water
c) Chemicals that you pour into the water
d) (a), (b) and (c)
What does
a) The
b) The volume of water in a container
c) The concentration of Hydrogen ions in a solution
d) (a) and (c) are both correct answers
What range of pH values would you expect in an acidic solution?
a) 0.0 – 6.0
b) 8.0 - 9.0
c) 10.0-11.0
d) Both (a) and (b) are correct answers
Given that a solution of Kool-Aid has a concentration of Hydrogen ions equal to 1 x 10-9 mol/L, what would its pH be?
a) -9
b) 19
c) 1
d) 9
Which of the following is a characteristic of acid rain?
a) Higher pH than normal rain
b) High concentration of sulfuric and nitric acids
c) High concentration of hydroxyl ions (OH-)
d) Same pH as normal rain
If the following pH readings were taken from various spots along the Brazos River, what is the average pH of the river? Readings: 3.2, 3.8, 5.4, 4.0 and 3.6
a) 5.0
b) 4.0
c) 10.0
d) 13.6
Using scientific notation, how would you express a pH of 12.0 in terms of the concentration of Hydrogen ions in the solution?
a) 1 x 1012 mol/L
b) 12 x 100 mol/L
c) -1 x 10-2 mol/L
d) 1 x 10-12 mol/L
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