l. If the pKb of an amine is 9.54, what will its sum, once combined with the pK.

Question

l. If the pKb of an amine is 9.54, what will its sum, once combined with the pK. ofits conjugate acid be equal to? a. 640 b. 4.46 c. -9.94 d 14.00 2. Which of the following statements is "true conceming the carbohydrate shown below? a. Carbon 4 is part of a secondary alcohol. b. The absolute configuration of carbon 2 is (S). c. The absolute configuration of carbon 3is(R) d. The molecule is achiral. 3. An amino acid would have the following structure under which ofthe following conditions? a. neutral solution b. basic solution c. acidic solution d only at pH 6.5

Explanation / Answer

Question 1.

Note that, by definition

pKa + pKb = 14

therefore,

if pKb = 9.54

then

pKa = 14-9.54 = 4.46

which impliest that

pKa + pKb = 14 (always,f or water at 25°C)

Related Questions

Navigate

• Browse (All)
• Browse L
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.