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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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