Which Is the Best Acid to Use in the Preparation

question 100

Multiple Choice

Which is the best acid to use in the preparation of a buffer with pH = 9.3?

• A)CH₃NH₂ (K_b = 3.7 × 10^-4)
• B)NH₃ (K_b = 1.8 × 10^-5)
• C)NH₂OH (K_b = 9.1 × 10^-9)
• D)C₆H₅NH₂ (K_b = 4.3 × 10^-10)

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Definitions:

Erikson's Theory

A theory of psychosocial development identifying eight stages through which a healthily developing human should pass from infancy to late adulthood.

Adolescence

A transitional stage of physical and psychological development that generally occurs during the period from puberty to legal adulthood.

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A phase of the life span between adolescence and full-fledged adulthood which encompasses late teens through the twenties, marked by exploration and self-discovery.

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A psychologist known for his work on emerging adulthood, a developmental phase between adolescence and full-fledged adulthood.