Which of the Following Pairs Would Be the Best Buffer

question 27

Multiple Choice

Which of the following pairs would be the best buffer at pH 10.0?

• A)acetic acid and sodium acetate (pK_a = 4.76)
• B)H₂CO3 and NaHCO₃ (pKas are 3.77 and 10.4)
• C)lactic acid and sodium lactate (pK_a = 3.86)
• D)NaH₂PO4 and Na2HPO4 (pK_as are 2.1,7.2,12.4)

Recognize the importance of environmental factors and community infrastructure in disease prevention.

Understand the historical development of public health initiatives and their impact on community health.

Analyze the role of government and non-governmental organizations in the advancement of public health.

Identify key figures and their contributions to public health and nursing.

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Definitions:

Treasury Note

A Treasury note is a marketable U.S. government debt security with a fixed interest rate and maturity between one and ten years.

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Value-Weighted Index

An index in which each component is included in proportion to its market value, making larger companies account for a bigger portion of the index.

Divisor

A mathematical component used in indices to adjust the index value, catering for changes in stock splits or similar adjustments.