If a Small Amount of a Strong Acid Is Added

question 13

Multiple Choice

If a small amount of a strong acid is added to buffer made up of a weak acid,HA,and the sodium salt of its conjugate base,NaA,the pH of the buffer solution does not change appreciably because

• A)the K_a of HA is changed.
• B)the strong acid reacts with A^- to give HA,which is a weak acid.
• C)no reaction occurs.
• D)the strong acid reacts with HA to give H₂A⁺.
• E)the strong acid reacts with A^- to give H₂A⁺.

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Definitions:

Retention

Retention refers to the ability to maintain information over time in memory or to keep individuals engaged in a specific context or role.

Retention Interval

The period of time that elapses between the learning or acquisition of information and when it is retrieved or recalled.

Stimulus Material

Items or media used to evoke responses in subjects during psychological experiments or assessments.

Hermann Ebbinghaus

A German psychologist who is best known for his pioneering work on memory and the forgetting curve.