The Following Question Refers to the Following System: a 1 $\times$

question 71

Multiple Choice

The following question refers to the following system: A 1.0-liter solution contains 0.25 M HF and 0.32 M NaF (K_a for HF is 7.2 $\times$ 10^-4) . If one adds 0.30 liters of 0.020 M KOH to the solution,what will be the change in pH?

• A)0.02
• B)3.27
• C)0.13
• D)-0.11
• E)-0.28

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Definitions:

Test-Retest Reliability

The consistency of a test's results over time when the same participants take the same test again under similar conditions.

Thematic Apperception Test

A projective psychological test designed to reveal a person's social drives or needs by their interpretation of a series of pictures of emotionally ambiguous situations.

Projective Test

A type of psychological test in which the subject’s responses to ambiguous or unstructured material are analyzed to uncover underlying attitudes, emotions, or personality traits.

Longitudinal Study

A research method that studies the same participants multiple times over a period of time.