The ________ of a solution is the negative logarithm of the hydrogen ion concentration expressed in moles per liter.
A) charge
B) pH
C) solubility
D) acidity
E) basicity
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Question 2) Which has the greater concentration of hydrogen ions, a substance with a pH of 5 or a substance with a pH of 4?
A) A pH of 4 is greater.
B) A pH of 5 is greater.
C) They are both equal; 4 and 5 are relative values.
D) pH 9, if you mixed the solutions.
E) There is not enough information to determine the answer.
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Question 3) Of the following choices, the pH of the least acidic solution is
A) 6.0.
B) 4.5.
C) 2.3.
D) 1.0.
E) 12.0.
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Question 4) Which of the following substances would be most acidic?
A) lemon juice, pH = 2
B) urine, pH = 6
C) tomato juice, pH = 4
D) white wine, pH = 3
E) stomach secretions, pH = 1
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Question 5) An important buffer in body fluids is
A) NaCl.
B) NaOH.
C) HCl.
D) NaHCO3.
E) H2O.
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Question 6) If a substance has a pH that is greater than 7, it is
A) neutral.
B) acidic.
C) alkaline.
D) a buffer.
E) a salt.
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Question 7) The chemical notation that indicates concentration is represented as
A) ().
B) <>.
C) .
D) .
E) .
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Question 8) A solution containing equal numbers of hydrogen ions and hydroxide ions is
A) acidic.
B) basic.
C) neutral.
D) alkaline.
E) in equilibrium.
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Question 9) An excess of hydrogen ions in the body fluids can have fatal results because this can
A) break chemical bonds.
B) change the shape of proteins, rendering them nonfunctional.
C) disrupt tissue functions.
D) change body fluid pH.
E) All of the answers are correct.
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Question 10) Which pH is closest to normal body pH?
A) pH 7
B) pH 8
C) pH 4
D) pH 3
E) pH 2
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