Buffer Solutions with the Component Concentrations Shown Below Were Prepared

question 4

Multiple Choice

Buffer solutions with the component concentrations shown below were prepared. Which of them should have the lowest pH?

• A)[CH₃COOH] = 0.25 M, [CH₃COO⁻] = 0.25 M
• B)[CH ₃COOH] = 0.75 M, [CH ₃COO ⁻] = 0.75 M
• C)[CH ₃COOH] = 0.75 M, [CH ₃COO ⁻] = 0.25 M
• D)[CH ₃COOH] = 0.25 M, [CH ₃COO ⁻] = 0.75 M
• E)[CH ₃COOH] = 1.00 M, [CH ₃COO ⁻] = 1.00 M

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Definitions:

Pleasure Principle

A concept in psychoanalytic theory referring to the instinctual seeking of pleasure and avoidance of pain to satisfy biological and psychological needs.

Morality

Principles or standards determining what behaviors are considered right or wrong by a society or individual.

Hormones

Chemical messengers produced by glands in the body that regulate physiological activities and maintain homeostasis.

Neurotransmitters

Substances that carry signals between neurons across synapses within the nervous system.