BIOLOGY W/CONNECT >IP<
11th Edition
ISBN: 9781259910487
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 2, Problem 7U
A solution with a high concentration of hydrogen ions
a. is called a base.
b. is called an acid.
c. has a high pH
d. Both b and c are correct.
Expert Solution & Answer
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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
If the addition of an acid or a base to a solution does not change its pH (or changed minimally), then that solution is referred to as a
a. acid
b. base
c. buffer
d. neutral solution
This occurs when the cations and anions are attracted to the positive and negative ends of water molecules:
A. ionic bonding
B. dissociation
C. covalent bonding
D. hydrogen bonding
Chapter 2 Solutions
BIOLOGY W/CONNECT >IP<
Ch. 2 - The property that distinguishes an atom of one...Ch. 2 - If an atom has one valence electronthat is. a...Ch. 2 - An atom with a net positive charge must have more...Ch. 2 - The isotopes carbon-12 and carbon-14 differ in a....Ch. 2 - Which of the following is NOT a property of the...Ch. 2 - Ionic bonds arise from a. shared valence...Ch. 2 - A solution with a high concentration of hydrogen...Ch. 2 - Using the periodic table on page 22, which of the...Ch. 2 - Refer to the element pictured. How many covalent...Ch. 2 - Prob. 3A
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- Using a pH meter, you find the pH of an unknown solution to be 8.0. How would you describe this solution? a. weakly acidic b. strongly acidic c. weakly basic d. strongly basicarrow_forwardA salt does not release ______ in water. a. ions b. H+arrow_forwardWhich of the following statements is not true? a. Water is polar. b. Water stabilizes temperature. c. Water is essential for life. d. Water is the most abundant atom in Earth’s atmosphere.arrow_forward
- 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.arrow_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_forwardWhich of the following statements is true? a. Acids and bases cannot mix together. b. Acids and bases will neutralize each other. c. Acids, but not bases, can change the pH of a solution. d. Acids donate hydroxide ions (OH–); bases donate hydrogen ions (H+).arrow_forward
- Which of the following best describes a solution with a pH of 9? A. it would have 100 times more free hydrogen ions than a solution with a pH of 7 B. it would have half as many hydrogen ions as a solution with a pH of 7 C. it would be classified as a base D. it would be classified as an acidarrow_forwardWhat is the pH of a solution that has a higher concentration of H+ ions than water? A. > 7 B. 7 C.< 7arrow_forwardElectrolytes that release hydrogen ions in water are Group of answer choices A) bases. B) nucleotides. C) acids. D) electrons.arrow_forward
- substance that do not dissolve well in water are a. hydrophobic b. hydrophilic c.isotonic d.polar e.saltsarrow_forwardWater molecules have one oxygen atom that is more electronegative than the two hydrogen atoms bound to it. As a result, which type of bonding hold water molecules together a. non-popular covalent bonding b. polar covalent bonding c.ionic bonding d.hydriohocicarrow_forwardSelect 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 acidarrow_forward
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