You Wish to Prepare a Buffer Containing CH₃COOH with a PH

question 52

Multiple Choice

You wish to prepare a buffer containing CH₃COOH with a pH of 4.24.If the pK_a of acetic acid is 4.74,what ratio of [CH₃COO^-]/[CH₃COOH] must you use?

• A)0.10
• B)0.50
• C)0.32
• D)2.0
• E)2.8

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Definitions:

Free Association

Psychodynamic therapy method allowing spontaneous, uncensored verbal expression to uncover unconscious thoughts.

Psychoanalysis

A therapeutic approach and theory of psychopathology, originated by Sigmund Freud, which emphasizes the exploration of unconscious conflicts.

Couch

A piece of furniture designed for sitting or lying on, often used symbolically to represent psychoanalysis or psychotherapy sessions.

Psychosexual Development

A Freudian concept that describes the series of stages children go through where their libido focuses on different erogenous zones, influencing personality development.