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Concept explainers
(a)
Interpretation:
The design for preparation of nylon-
Concept introduction:
Acids can be substituted with amino group to get amides. These amide units join to polymerize and form nylon
(b)
Interpretation:
The design for preparation of polyester from dicarboxylic acid containing six or lesser carbon atom is to be drawn.
Concept introduction:
The polymers are a type of macromolecules which are formed by repeated units of monomers. The polymer can be formed by different polymerization methods such as free radical polymerization and condensation polymerization. Polyesters are formed by condensation polymerization between and dicarboxylic acid and
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Chapter 21 Solutions
EBK ORGANIC CHEMISTRY
- (a) Give chemical tests to distinguish between the following pairs of compounds :(i) Benzoic acid and Phenol (ii) Benzaldehyde and Acetophenone(b) An organic compound with molecular formula C5H10O does not reduce Tollen’s reagent but forms an addition compound with sodium hydrogen sulphite and gives a positive iodoform test. On vigorous oxidation, it gives ethanoic acid and propanoic acid. Identify the compound and write all chemical equations for the reactions.arrow_forwardDevelop syntheses for the following compounds. As starting materials, you may use cyclopentanol, alcohols containing no more than four carbon atoms, and any common reagents and solvents. (a) trans-cyclopentane-1,2-diol (b) 1-chloro-1-ethylcyclopentanearrow_forward(a) How will you carry out the following conversions?(i) Acetylene to Acetic acid (ii) Toluene to m-nitrobenzoic acid(iii) Ethanol to Acetone(b) Give reasons :(i) Chloroacetic acid is stronger than acetic acid.(ii) pH of reaction should be carefully controlled while preparing ammonia derivatives of carbonyl compounds.arrow_forward
- Suggest a method of preparing ethylbenzene, starting with benzene and ethylene as the only organic reagents.arrow_forward(a) Give a seperate chemical test to distinguish between the following pairs of compounds:(i) Ethanol and Phenol (ii) 2-Pentanol and 3-Pentanol(b) Explain Kolbe’s reaction with the help of suitable example.arrow_forward(a) Give chemical tests to distinguish between(i) Phenol and Benzoic acid (ii) Benzophenone and Acetophenonearrow_forward
- Answer ALL parts of this question. (a) Using resonance structures, discuss the following statement; phenols are much stronger acids than aliphatic alcohols. (b) Give the structure of a stronger organic acid than phenol. (c) Rationalise the acidity of the latter organic acid by drawing two resonance structures of the conjugate base. (d) Eugenol is a natural product derived from the dried flower buds of the evergreen tree, Eugenia aromatica. Briefly describe a procedure with reagents required to extract eugenol as a single component from the mixture of compounds present in these flower buds. OH LOCH 3 eugenolarrow_forwardDescribe how would you distinguish the following pairs, (a) Benzene and cyclohexane (b) Phenol and toluene (c) Phenol and benzoic acidarrow_forward(a) Differentiate between copolymerization and homopolymerization. Give one example of each.(b) What is the role of Benzoyl peroxide in preparation of Polythene?arrow_forward
- (a) One test for the presence of an alkene is to add a smallamount of bromine, which is a red-brown liquid, and lookfor the disappearance of the red-brown color. This test doesnot work for detecting the presence of an aromatic hydrocarbon.Explain. (b) Write a series of reactions leading topara-bromoethylbenzene, beginning with benzene andusing other reagents as needed. What isomeric side productsmight also be formed?arrow_forwardWrite equations showing how to prepare each of the following from benzene or toluene and any necessary organic or inorganic reagents. If an ortho, para mixture is formed in any step of your synthesis, assume that you can separate the two isomers. (a) Isopropylbenzene (b) p-Isopropylbenzenesulfonic acid (c) 2-Bromo-2-phenylpropane (d) 4-tert-Butyl-2-nitrotoluene (e) m-Chloroacetophenone (f) p-Chloroacetophenone (g) 3-Bromo-4-methylacetophenone (h) 2-Bromo-4-ethyltoluene (i) 3-Bromo-5-nitrobenzoic acid (j) 2-Bromo-4-nitrobenzoic acid (k) 1-Phenyloctane (l) 1-Phenyl-1-octene (m) 1-Phenyl-1-octyne (n) 1,4-Di-tert-butyl-1,4-cyclohexadienearrow_forwardAnswer ALL parts of this question. (a) Compound Z is a tertiary aromatic amine with the formula, C8H11N. Provide a chemical structure for compound Z. (b) Provide a reaction scheme for the preparation of nitrous acid. (c) Draw the structure of the product formed exclusively when nitrous acid reacts with Z. (d) Give a curly arrow mechanism for the preparation of the yellow azo-dye from the reaction of Z with benzenediazonium chloride.arrow_forward
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