Which Solution Below Has the Highest Concentration of Hydroxide Ions

question 5

Multiple Choice

Which solution below has the highest concentration of hydroxide ions?

• A) pH = 7.93
• B) pH = 3.21
• C) pH = 7.00
• D) pH = 12.6
• E) pH = 9.82

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Definitions:

Differential Threshold

The minimum difference in stimulation required to detect a change or difference between two stimuli.

Absolute Threshold

The smallest level of stimulus that can be detected by the sensory systems at least half the time.

Absolute Threshold

The minimum intensity of a stimulus required to be perceptibly recognized by an individual's senses.

Absolute Threshold

The minimum intensity level of a stimulus that an individual can detect at least 50 percent of the time.