The Indicator Propyl Red Has K_a = 3

question 8

Multiple Choice

The indicator propyl red has K_a = 3.3 × 10⁻⁶. What would be the approximate pH range over which it would change color?

• A)3.5−5.5
• B)4.5−6.5
• C)5.5−7.5
• D)6.5−8.5
• E)None of these choices are correct.

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Definitions:

Behavioral Level

The manifestation of actions and reactions observed in individuals or groups, often studied in psychology to understand and predict human behavior better.

Emotional Level

Describes the intensity or degree of emotions a person experiences or expresses.

Physiological Level

Referring to the normal functioning of an organism or any of its parts, usually associated with biochemical and physical processes.

Tend-and-befriend Response

A stress response model proposing that people, particularly women, seek social alliances and support rather than fight or flight.