BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
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Chapter 2, Problem 12SA
When dissolved in water, a(n) _________ donates
a. | acid; base | c. | buffer; solute |
b. | base; acid | d. | base; buffer |
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Which of the following describes a buffer?
A. The measure of the amount of hydrogen ions in a liquid
B. A set of chemicals that can keep the pH of a solution stable by alternately donating and accepting the ions that contribute to pH
C. A substance that releases hydrogen ions in water
D. A substance that accepts hydrogen ions in water
Select the statements that are TRUE regarding Water. SELECT ALL THAT APPLY
A. Water is amphoteric
B. Water can be a base
C. Water is partially charged
D. Water can be an acid
Which of the following is FALSE when the concentration of the buffer solution was increased?
a. The buffer will be effective in resisting pH changes.
b. There will be more weak acid components that can neutralize the added base.
c. The solution will have a higher buffer capacity.
d. There will be more weak base components that can neutralize the added base.
Chapter 2 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 2 - What atom has only one proton? a. hydrogen c. a...Ch. 2 - A molecule into which a radioisotope has been...Ch. 2 - Prob. 3SACh. 2 - Prob. 4SACh. 2 - All ions have at least one ________ select all...Ch. 2 - Rank the following chemical bonds in order of...Ch. 2 - The mutual attraction of opposite charges holds...Ch. 2 - Atoms share electrons unequally in an _______...Ch. 2 - An _________ substance repels water. a. acidic c....Ch. 2 - A salt does not release ______ in water. a. ions...
Ch. 2 - Hydrogen ions H+ are _____. a. in blood c....Ch. 2 - When dissolved in water, an _________ donates H+;...Ch. 2 - An ________ can help keep the pH of a solution...Ch. 2 - Prob. 14SACh. 2 - Prob. 15SACh. 2 - Alchemists were the forerunners of modern-day...Ch. 2 - Draw a shell model of a lithium atom Li, which has...Ch. 2 - Polonium is a rare element with 33 radioisotopes....Ch. 2 - Some undiluted acids are not as corrosive as when...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
A salt does not release ______ in water. a. ions b. H+
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The second part of the question was asking if there would be any other areas in our body that would be affected by a change in pH balance, and if it would cause the areas to be damaged by the change in pH?
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Acids are substances that ________.
a.
release hydrogen ions
b.
absorb hydrogen ions
c.
absorb hydroxide ions
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As water is chilled, its molecules slow their movement, and H-bonds form
and hold water molecules further apart. This explains why....
a.
Water is most dense just above freezing
b.
Ice floats
c.
Water molecules dissociate only a small amount
d.
Why living near a lake moderates temperatures on land
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Sports beverages are a combination of fluid, carbohydrate, and?
A. Diuretics
B. Electrolytes
C. Unsaturated fatty acids
D. Soluble fiber
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Warm water ______________________________.
a. expands
b. shrinks
c. is more acidic
d. two of the above
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which of the following is a characteristic of a buffer?
a. The pH will go down significantly when H3O+ is added to the buffer
b. The pH will go down very slightly when H3O+ is added to the buffer
c. The pH will go up significantly when H3O+ is added to the buffer
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Which of the following would be most effective as a buffer?
A. pure water
B. a mixture of molecules that are bonded to each other with hydrogen bonds
C. a mixture of unbonded atoms
D. a mixture of molecules with ionic bonds that will break apart into ions
E. a mixture of nonpolar molecules
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The amount of energy needed to raise one gram of water one degree Celsius is calleda. a calorie. b. a kilocalorie. c. ATP.d. heat.
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Eating salty food is bad for our health. Does adding water to salty soup decreases the amount of salt in it? Explain your answer.
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two of these statements are truths and one is a lie. Which of the following statements is a lie?
a.
The concept of pH is exclusive of how buffers work.
b.
Salts dissociate into ions (except H+ and OH-) when dissolved in water.
c.
ATP stores a large amount of potential energy.
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Manufacturers make carbonated drinks by forcing pressurized carbon dioxide gas into flavored water. A chemical reaction between water molecules and some of the CO2 molecules creates hydrogen ions (H+) and bicarbonate, which is a buffer. In your opinion, is this reaction likely to raise the pH of a soda above 7, or lower it? Give your reasoning.
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GCSE Chemistry - Acids and Bases #34; Author: Cognito;https://www.youtube.com/watch?v=vt8fB3MFzLk;License: Standard youtube license