Nursing School Entrance Exams by LearningExpress

Author:LearningExpress
Language: eng
Format: epub
Tags: epub, ebook, QuarkXPress
ISBN: 111-1-11-111111-1
Publisher: LearningExpress, LLC
Published: 2017-02-21T16:00:00+00:00

pOH = 6.60

or

pH + pOH = 14.00

pOH = 14.00 – 7.40 = 6.60

68. b. As the concentration of hydrogen ions decreases, the pH becomes more basic and increases.

69. d. On the pH scale, 1–7 is acidic, 7 is neutral, and 7–14 is alkaline.

70. d. By definition, when a base dissociates in water, it produces one or more OH– and one or more cations.

71. a. By definition, when an acid dissociates in water, it produces one or more H+ and one or more anions.

72. a. An increase of one pH unit is a tenfold decrease in hydrogen ions.

73. a. The pH of pure H2O is 7. [H+] = [OH–]

74. b. This is the definition of a buffer.

75. b. Metal bicarbonate + an acid → salt + carbonic acid.

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