Textbook Question
Define pH. The pH range of blood is from 7.35 to 7.45. Circle the correct answer to complete the sentence: This is slightly (acidic / basic).
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2. Cell Chemistry & Cell Components
Acids and Bases
Back2. Cell Chemistry & Cell Components
Acids and Bases
- Textbook Question
A(n)__is a solute that dissociates to release hydrogen ions, and a(n)___is a solute that removes hydrogen ions from solution.
(a) base, acid
(b) salt, base
(c) acid, salt
(d) acid, base
- Multiple Choice
The addition of an acid like HCl to an aqueous solution (pure water) would result in:
5views - Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
A solution with a pH of 10 has more hydrogen ions than a solution with a pH of 2.
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Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
A buffer is a system of chemicals that resists a change in pH
1views - Multiple ChoiceThe absorption of human-generated CO2 by the oceans __________.3views
- Textbook Question
A salt is:
a. a metal cation bonded to a nonmetal anion.
b. a hydrogen ion donor.
c. an electrolyte that conducts electricity in water.
d. Both a and c are correct.
e. Both b and c are correct.
1views - Textbook QuestionWhen H2 and CO2 react, acetic acid can be formed spontaneously while the production of formaldehyde requires an input of energy. Which of these conclusions can be drawn from this observation?a. More heat is released when formaldehyde is produced compared to the production of acetic acid.b.Compared to the reactants that it is formed from, formaldehyde has more potential energy than does acetic acid.c. Entropy decreases when acetic acid is produced and increases when formaldehyde is produced.d. Only acetic acid could be produced under conditions that existed in early Earth.3views
- Multiple Choice
Which of the following reactions is most consistent with that of a base?
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In what way(s) do bases work to increase the pH of a solution?
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What is a salt? How does a salt differ from an acid or a base?
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Jason, a 12-year-old boy, was awakened suddenly by a loud crash. As he sat up in bed, straining to listen, his fright was revealed by his rapid breathing (hyperventilation), a breathing pattern effective in ridding the blood of CO₂. At this point, was his blood pH rising or falling?
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Mrs. Roberts, who is in a diabetic coma, has just been admitted to Noble Hospital. Her blood pH indicates that she is in severe acidosis (blood pH in the acid range), and the medical staff quickly institute measures to bring her blood pH back within normal limits. Note the normal pH of blood, and discuss why severe acidosis is a problem.
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An important buffer system in the human body involves carbon dioxide (CO₂) and bicarbonate ion (HCO₃-) in the reversible reaction
CO₂ + H₂O ⇌ H₂CO₃ ⇌ H⁺ + HCO₃-
If a person becomes excited and exhales large amounts of CO2, how will the pH of the person's body be affected?
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A pH of 7.8 in the human body typifies a condition referred to as
(a) Acidosis
(b) Alkalosis
(c) Dehydration
(d) Homeostasis
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