In an Experiment, 100 ML of a 0

question 143

Multiple Choice

In an experiment, 100 mL of a 0.1 M solution of methionine is titrated using 0.1 M NaOH.Using this information, along with the titration curve shown, which of the following statements is NOT correct?

• A)At low pHs, the majority of the amino acid present is fully protonated.
• B)The pK_a of the protonated amine group seems to be a little greater than 10.
• C)When the pH reaches the physiological value of 7.4, the carboxylic acid group is essentially deprotonated.
• D)The K_a of the -COOH group appears to be between 5 *10^-3 and 8*10^-3.
• E)Methionine appears to have a neutral side group, as there seem to be two equivalence points evident on the titration curve.

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Definitions:

Values Orientations

Cultural or psychological frameworks that guide individual or group behaviors and perceptions regarding what is important in life.

Conflict Episodes

Specific instances of conflict within interpersonal relationships or among groups, characterized by disagreement and discord.

Fundamental Attribution Error

The tendency to overemphasize personality-based explanations for behaviors observed in others while underemphasizing the role of situational influences.

Reactance

A psychological reaction that occurs in response to perceived restrictions on one's freedoms or choices, leading to resistance.