MindTap Biology, 1 term (6 months) Printed Access Card for Starr/Taggart/Evers/Starr's Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305269842
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 12SQ
When dissolved in water, a(n) ________ donates H+; a(n) ________ accepts H+.
- a. acid; base
- b. base; acid
- c. buffer; solute
- 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
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.
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
Chapter 2 Solutions
MindTap Biology, 1 term (6 months) Printed Access Card for Starr/Taggart/Evers/Starr's Biology: The Unity and Diversity of Life (MindTap Course List)
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- Acids are substances that ________. a. release hydrogen ions b. absorb hydrogen ions c. absorb hydroxide ionsarrow_forwardWhich 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 moleculesarrow_forwardAs 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 landarrow_forward
- 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 bufferarrow_forwardThe 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?arrow_forwardA buffer system consists of A. a weak acid and its conjugate base. B. a weak acid and a proton donor. C. a weak acid and a proton. D. a weak base and a proton acceptor.arrow_forward
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