The PH of a Certain Solution Is 3

question 82

Multiple Choice

The pH of a certain solution is 3.0. How many H⁺(aq) ions are there in 1.0 L of the solution?

• A)0.001 ions
• B)1,000 ions
• C)6.* 10²⁰ ions
• D)3 ions
• E)6.* 10²⁶ ions

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Definitions:

Absolute Threshold

The minimum stimulus intensity required to detect a stimulus or produce a sensory response in at least 50% of trials, indicating the limits of human sensory perception.

Difference Threshold

The smallest amount of change between two stimuli that a person can detect 50% of the time, also known as the just noticeable difference (JND).

Sensory Adaptation

The process by which sensory receptors become less sensitive to constant stimuli over time, leading to a decrease in sensation.

Masking Stimulus

A stimulus that interferes with the perception of another stimulus, often used in psychological experiments to study attention processes.