You Wish to Prepare an HC₂H₃O₂ Buffer with a PH

question 91

Multiple Choice

You wish to prepare an HC₂H₃O₂ buffer with a pH of 4.24.If the pK_a of is 4.74,what ratio of
C₂H₃O₂^-/HC₂H₃O₂ must you use?

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

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Definitions:

Observational Methods

Research techniques that involve watching and recording behaviors or events as they occur without manipulating the situation.

Inaccurately

Incorrectly; without precision or truthfulness.

Informal Assessment Techniques

Methods used to evaluate individuals in a less structured manner, often using observation, interviews, or qualitative analysis.

Highly Valid

Refers to the extent to which evidence and theory support the interpretations of test scores for its intended purposes, indicating a high level of accuracy and reliability.