Sodium bicarbonate, NaHCO 3 , is the sodium salt of carbonic acid (H 2 CO 3 ), pK a = 6.37. Which of the substances shown in Problem 2-44 [Acetone (pK a =19.3), 2, 4-pentanedione (pK a =9.0), phenol (pK a =9.9), Acetic acid (pK a = 4.76)] will react significantly with sodium bicarbonate is to be stated. Concept introduction: An ion which is a weak base can deprotonate only when the substance reacting with it has a pK a value than that of its parent acid. To determine: Which of the substances shown in Problem 2-44 [Acetone (pK a =19.3), 2, 4-pentanedione (pK a =9.0), phenol (pK a =9.9), Acetic acid (pK a = 4.76] will react significantly with sodium bicarbonate. pK a of carbonic acid, = 6.37.
Sodium bicarbonate, NaHCO 3 , is the sodium salt of carbonic acid (H 2 CO 3 ), pK a = 6.37. Which of the substances shown in Problem 2-44 [Acetone (pK a =19.3), 2, 4-pentanedione (pK a =9.0), phenol (pK a =9.9), Acetic acid (pK a = 4.76)] will react significantly with sodium bicarbonate is to be stated. Concept introduction: An ion which is a weak base can deprotonate only when the substance reacting with it has a pK a value than that of its parent acid. To determine: Which of the substances shown in Problem 2-44 [Acetone (pK a =19.3), 2, 4-pentanedione (pK a =9.0), phenol (pK a =9.9), Acetic acid (pK a = 4.76] will react significantly with sodium bicarbonate. pK a of carbonic acid, = 6.37.
Sodium bicarbonate, NaHCO3, is the sodium salt of carbonic acid (H2CO3), pKa = 6.37. Which of the substances shown in Problem 2-44 [Acetone (pKa =19.3), 2, 4-pentanedione (pKa =9.0), phenol (pKa =9.9), Acetic acid (pKa = 4.76)] will react significantly with sodium bicarbonate is to be stated.
Concept introduction:
An ion which is a weak base can deprotonate only when the substance reacting with it has a pKa value than that of its parent acid.
To determine:
Which of the substances shown in Problem 2-44 [Acetone (pKa =19.3), 2, 4-pentanedione (pKa =9.0), phenol (pKa =9.9), Acetic acid (pKa = 4.76] will react significantly with sodium bicarbonate. pKa of carbonic acid, = 6.37.
How many chiral carbons are in the molecule?
OH
F
CI
Br
A mixture of three compounds Phen-A, Acet-B and Rin-C was analyzed using TLC
with 1:9 ethanol: hexane as the mobile phase. The TLC plate showed three spots
of R, 0.1 and 0.2 and 0.3.
Which of the three compounds (Phen-A; Acet-B or Rin-C) would have the highest
(Blank 1), middle (Blank 2) and lowest (Blank 3) spot respectively?
0
CH:
0
CH,
0
H.C
OH
H.CN
OH
Acet-B
Rin-C
phen-A
A
A
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Chapter 2 Solutions
OWLv2 with Student Solutions Manual eBook, 4 terms (24 months) Printed Access Card for McMurry's Organic Chemistry, 9th
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