If Acid Rain Has Lowered the PH of a Particular

question 125

Multiple Choice

If acid rain has lowered the pH of a particular lake to pH 4.0, which of the following statements about this lake is true?

• A) The hydrogen ion concentration is 1 × 10-10 moles per liter of lake water.
• B) The hydrogen ion concentration is 4.0 moles per liter of lake water.
• C) The hydrogen ion concentration is 1 × 104 moles per liter of lake water.
• D) The hydroxyl ion concentration is 1 × 10-10 moles per liter of lake water.
• E) The hydroxyl ion concentration is 1 × 10-4 moles per liter of lake water.

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Definitions:

Gustav Theodor Fechner

A German philosopher, physicist, and experimental psychologist, known as a founder of psychophysics, which quantifies the relationships between physical stimuli and the sensations and perceptions they affect.

Psychophysics

The branch of psychology that studies the relationships between physical stimuli and the sensations and perceptions they produce.

Psychological Sensation

The initial process of detecting and interpreting environmental stimuli through the senses.

Perception

The process of organizing, identifying, and interpreting sensory information to represent and understand the environment around us.