EBK BIOLOGY TODAY AND TOMORROW WITHOUT
5th Edition
ISBN: 8220100557187
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 2, Problem 6SQ
When dissolved in water, a(n) _____ donates H+ and a(n) ______ accepts H+.
- a. acid; base
- b. base; acid
- c. buffer; solute
- d. base; buffer
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When dissolved in water, a(n) ________ donates H+;a(n) ________ accepts H+.a. acid; base c. buffer; soluteb. base; acid d. base; buffer
A substance dissociates into K+ and Cl– in solution.The substance is a(n) ________.a. acidb. basec. saltd. buffer
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
Chapter 2 Solutions
EBK BIOLOGY TODAY AND TOMORROW WITHOUT
Ch. 2 - A. The first shell corresponds to the first energy...Ch. 2 - B. A chlorine atom (Cl) becomes a negatively...Ch. 2 - Figure 2.12 A pH scale. Here, red dots signify...Ch. 2 - Figure 2.17 Fatty acids. Double bonds in the tails...Ch. 2 - Effects of Dietary Fats on Lipoprotein Levels...Ch. 2 - Effects of Dietary Fats on Lipoprotein Levels...Ch. 2 - Effects of Dietary Fats on Lipoprotein Levels...Ch. 2 - Prob. 1SQCh. 2 - Which element has only one proton?Ch. 2 - The mutual attraction of opposite charges holds...
Ch. 2 - A salt does not release __________ in water. a....Ch. 2 - A(n) _______ substance repels water. a. acidic b....Ch. 2 - When dissolved in water, a(n) _____ donates H+ and...Ch. 2 - _________ is a monosaccharide. a. Glucose b....Ch. 2 - Unlike saturated fatty acids, the tails of...Ch. 2 - Which of the following is a class of molecules...Ch. 2 - Prob. 10SQCh. 2 - Prob. 11SQCh. 2 - Prob. 12SQCh. 2 - Prob. 13SQCh. 2 - Match the molecules with the best description.Ch. 2 - Match each molecule with its component(s).Ch. 2 - Alchemists were the forerunners of modern-day...Ch. 2 - Prob. 2CTCh. 2 - Polonium is a rare element with 33 radioisotopes....Ch. 2 - In the following list, identify the carbohydrate,...
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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_forwardWhen dissolved in water, an _________ donates H+; an ________ accepts H+. a. acid; base c. buffer; solute b. base; acid d. base; bufferarrow_forwardWhich of the following solutions has the greatest concentration of hydroxyl ions [OH-]? Select one: a. lemon juice at pH 2 O b. vinegar at pH 3 O c. tomato juice at pH 4 O d. urine at pH 6 e. seawater at pH 8arrow_forward
- Which 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_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_forwardWhich 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.arrow_forward
- 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 solutionarrow_forwardA pH of 3 is a. basic b. neutral c. acidicd. a bufferarrow_forwardWhich 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 waterarrow_forward
- Which among the following is an example of a pharmaceutically important buffer system? a. All of the choices b. Sorensen's buffer c. Palitzsch's buffer d. Gifford's bufferarrow_forwardWhich of the following is most likely to be found evenly distributed in water in a homogeneous solution?a. sodium ions and chloride ionsb. NaCl moleculesc. salt crystalsd. red blood cellsarrow_forwardWhich of the following materials will have the greatest effect on colligative properties of a solution? a. CH3CI b. NaCl c. (NH4)2SO4 d. CH3CH2OH O A O Darrow_forward
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