The monomers of Kevlar with the structure of Nomex polymer are to be drawn and the differences in their structures are to be stated. Concept introduction: Polymer is defined as a substance made up of large number of units bonded together. A single unit is known as monomer. Polymers are formed mainly by two types of reactions namely, addition reactions and condensation polymerization reactions. The condensation polymerization reactions are defined as the reaction in which two or more monomers combine together to form a single molecule with an elimination of small molecules like water. To determine: The monomers of Kevlar polymer.
The monomers of Kevlar with the structure of Nomex polymer are to be drawn and the differences in their structures are to be stated. Concept introduction: Polymer is defined as a substance made up of large number of units bonded together. A single unit is known as monomer. Polymers are formed mainly by two types of reactions namely, addition reactions and condensation polymerization reactions. The condensation polymerization reactions are defined as the reaction in which two or more monomers combine together to form a single molecule with an elimination of small molecules like water. To determine: The monomers of Kevlar polymer.
Solution Summary: The author explains that monomers of Kevlar and Nomex polymer are to be drawn and the differences in their structures will be stated.
Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.
Chapter 22, Problem 137AE
a)
Interpretation Introduction
Interpretation: The monomers of Kevlar with the structure of Nomex polymer are to be drawn and the differences in their structures are to be stated.
Concept introduction: Polymer is defined as a substance made up of large number of units bonded together. A single unit is known as monomer. Polymers are formed mainly by two types of reactions namely, addition reactions and condensation polymerization reactions. The condensation polymerization reactions are defined as the reaction in which two or more monomers combine together to form a single molecule with an elimination of small molecules like water.
To determine: The monomers of Kevlar polymer.
(b)
Interpretation Introduction
Interpretation: The monomers of Kevlar with the structure of Nomex polymer are to be drawn and the differences in their structures are to be stated.
Concept introduction: Polymer is defined as a substance made up of large number of units bonded together. A single unit is known as monomer. Polymers are formed mainly by two types of reactions namely, addition reactions and condensation polymerization reactions. The condensation polymerization reactions are defined as the reaction in which two or more monomers combine together to form a single molecule with an elimination of small molecules like water.
To determine: The structure of Nomex polymer and the differences in the structures of Kevlar and Nomex polymer.
bre
The reaction sequence shown in Scheme 5 demonstrates the synthesis of a
substituted benzene derivative Q.
wolsd works 2
NH2
NaNO2, HCI
(apexe) 13× (1
HNO3, H2SO4
C6H5CIN2
0°C
HOTE
CHINO₂
N
O
*O₂H (
PO
Q
Я
Scheme 5
2 bag abouoqmics to sounde odi WEIC
(i)
Draw the structure of intermediate O.
[2 marks]
to noitsmot od: tot meinedogm, noit so oft listsb ni zaupaib bas wa
(ii) Draw the mechanism for the transformation of aniline N to intermediate O.
Spoilage
(b)
[6 marks]
(iii) Identify the reagent X used to convert compound O to the iodinated compound
[tom E
P.
vueimado oilovonsa ni moitos nolisbnolov ayd toes ai tedw nisiqx
(iv) Identify the possible structures of compound Q.
[2 marks]
[2 marks]
[shom 2]
(v)
bus noires goiribbeolovo xnivollot adj to subora sidab
Draw the mechanism for the transformation of intermediate P to compound Q.
[5 marks]
vi
(vi) Account for the regiochemical outcome observed in the reaction forming
compound Q.
[3 marks]
PROBLEM 4 Solved
Show how 1-butanol can be converted into the following compounds:
a.
PROBLEM 5+
b.
d.
-C=
N
Which alkene is the major product of this dehydration?
OH
H2SO4
heat