The validation about the presence of a “head and two tails” structure in the given substance has to be predicted. Concept introduction: The “head and two tails” model gives the orientation of groups in space. It has two parts, the head which is polar and the two tails, which are non-polar. The polar part of the model is soluble in water, so it is hydrophilic in nature. The non-polar part of the model is insoluble in water, so it is hydrophobic in nature.
The validation about the presence of a “head and two tails” structure in the given substance has to be predicted. Concept introduction: The “head and two tails” model gives the orientation of groups in space. It has two parts, the head which is polar and the two tails, which are non-polar. The polar part of the model is soluble in water, so it is hydrophilic in nature. The non-polar part of the model is insoluble in water, so it is hydrophobic in nature.
Solution Summary: The author explains that the "head and two tails" model gives the orientation of groups in space.
Definition Definition Group of atoms that shape the chemical characteristics of a molecule. The behavior of a functional group is uniform in undergoing comparable chemical reactions, regardless of the other constituents of the molecule. Functional groups aid in the classification and anticipation of reactivity of organic molecules.
Chapter 19, Problem 19.155EP
(a)
Interpretation Introduction
Interpretation: The validation about the presence of a “head and two tails” structure in the given substance has to be predicted.
Concept introduction: The “head and two tails” model gives the orientation of groups in space. It has two parts, the head which is polar and the two tails, which are non-polar. The polar part of the model is soluble in water, so it is hydrophilic in nature. The non-polar part of the model is insoluble in water, so it is hydrophobic in nature.
(b)
Interpretation Introduction
Interpretation: The validation about the presence of a “head and two tails” structure in the given substance has to be predicted.
Concept introduction: The “head and two tails” model gives the orientation of groups in space. It has two parts, the head which is polar and the two tails, which are non-polar. The polar part of the model is soluble in water, so it is hydrophilic in nature. The non-polar part of the model is insoluble in water, so it is hydrophobic in nature.
(c)
Interpretation Introduction
Interpretation: The validation about the presence of a “head and two tails” structure in the given substance has to be predicted.
Concept introduction: The “head and two tails” model gives the orientation of groups in space. It has two parts, the head which is polar and the two tails, which are non-polar. The polar part of the model is soluble in water, so it is hydrophilic in nature. The non-polar part of the model is insoluble in water, so it is hydrophobic in nature.
(d)
Interpretation Introduction
Interpretation: The validation about the presence of a “head and two tails” structure in the given substance has to be predicted.
Concept introduction: The “head and two tails” model gives the orientation of groups in space. It has two parts, the head which is polar and the two tails, which are non-polar. The polar part of the model is soluble in water, so it is hydrophilic in nature. The non-polar part of the model is insoluble in water, so it is hydrophobic in nature.
CHEM2323
Problem 2-24
Tt O
e:
ל
Predict the product(s) of the following acid/base reactions. Draw curved arrows to show the formation and
breaking of bonds. If the bonds needed are not drawn out, you should redraw them.
+ BF3
(a)
(b)
HI +
(c)
OH
-BF
Problem 2-25
Use curved arrows and a proton (H+) to draw the protonated form of the following Lewis bases. Before
starting, add all missing lone pairs.
(a)
(b)
:0:
(c)
N
1
CHEM2323
PS CH02
Name:
CHEM2323
Problem 2-26
Tt O
PS CH02
Name:
Use the curved-arrow formalism to show how the electrons flow in the resonance form on the left to give the
one on the right. (Draw all lone pairs first)
(a)
NH2
NH2
+
(b)
Problem 2-27
Double bonds can also act like Lewis bases, sharing their electrons with Lewis acids. Use curved arrows to
show how each of the following double bonds will react with H-Cl and draw the resulting carbocation.
(a)
H2C=CH2
(b)
(c)
Problem 2-28
Identify the most electronegative element in each of the following molecules:
(a) CH2FCI
F
Problem 2-29
(b) FCH2CH2CH2Br
(c) HOCH2CH2NH2
(d) CH3OCH2Li
F
0
0
Use the electronegativity table in Figure 2.3 to predict which bond in the following pairs is more polar and
indicate the direction of bond polarity for each compound.
(a) H3C-Cl or Cl-CI
(b) H3C-H or H-CI
(c) HO-CH3 or (CH3)3Si-CH3
(d) H3C-Li or Li-OH
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