Acids, Bases, Buffers & pH
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Acids, Bases, Buffers & pH Sample Test Qus
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a. has fewer hydrogen ions
b. has more hydrogen ions
c has an equal number of hydrogen ions
d. is less concentrated
3. A salt is:
a. A compound that dissociates in water and releases hydrogen ions (H+).
b. An atom that dissociates in water and forms cations and anions.
c. A compound that dissociates in water and releases hydroxyl ions (OH-).
d. A compound that dissociates in water and produces cations or anions other then H+ or OH-.
4. Each number on the pH scale represents a ________ change in H+ concentration.
a. one point
d. ten thousandfold
1. When bacterial cultures are grown in the lab, products of bacterial metabolism can build up making the environment too acidic or alkaline
for the bacteria to thrive. What is the best thing to add to the growing medium to keep the bacteria healthy?
b. a base
2. A solution that is at a pH of 8 ______ than a solution with a pH of 1.
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5. The body's bicarbonate buffer system functions to keep the pH of the blood neutral. Which two organs/systems are primarily involved in keeping this buffer system balanced?
a. lungs, liver
b. digestive, circulatory
c. digestive, respiratory
d. kidneys, lungs
e. immune, circulatory
6. The difference between a strong acid and a weak acid involves...
a. how much of it dissociates in water
b. how much it synthesizes in water
c. how much of it changes into water
d. hours spent lifting weights
7. Most of the fluids produced by the human body are ...
a. very acidic
b. in the neutral range
c. very basic
d. very alkaline
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