The Following Compounds Are Available as 0

question 33

Multiple Choice

The following compounds are available as 0.10 M aqueous solutions: pyridine (pKb = 8.82) , triethylamine (pKb = 3.25) , HClO₄, NaOH, phenol (pKa = 9.96) , HClO (pKa = 7.54) , and NH₃ (pKb = 4.74) . Identify two solutions that could be used to prepare a buffer with a pH of approximately 5.

• A) pyridine and HClO₄
• B) triethyamine and HClO₄
• C) phenol and NaOH
• D) HClO and NaOH

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