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Isoprene is the repeating unit in natural rubber. The structure of isoprene is a. Give a systematic name for isoprene. b. When isoprene is polymerized, two polymers of the form are possible. In natural rubber, the cis configuration is found. The polymer with the trans configuration about the double bond is called gutta percha and was once used in the manufacture of golf balls. Draw the structure of natural rubber and gutta percha showing three repeating units and the configuration about the carbon–carbon double bonds.

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Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

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Section
BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 21, Problem 74E
Textbook Problem
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Isoprene is the repeating unit in natural rubber. The structure of isoprene is

Chapter 21, Problem 74E, Isoprene is the repeating unit in natural rubber. The structure of isoprene is a. Give a systematic , example  1

a. Give a systematic name for isoprene.

b. When isoprene is polymerized, two polymers of the form

Chapter 21, Problem 74E, Isoprene is the repeating unit in natural rubber. The structure of isoprene is a. Give a systematic , example  2

are possible. In natural rubber, the cis configuration is found. The polymer with the trans configuration about the double bond is called gutta percha and was once used in the manufacture of golf balls. Draw the structure of natural rubber and gutta percha showing three repeating units and the configuration about the carbon–carbon double bonds.

(a)

Interpretation Introduction

Interpretation: The systematic name of isoprene and the structures of the given polymers with configuration about the carbon-carbon double are to be drawn.

Concept introduction: Polymers are very large molecules having high molecular masses, hence are also called as macromolecules. The structure of polymers consists of a very large number of repeating units joined together through covalent bonds in a regular fashion. Isoprene is the repeating unit in natural rubber.

Explanation of Solution

Explanation

To determine: The systematic name of isoprene.

The systematic name of isoprene is 2-methyl-1,3-butadiene.

The structure of isoprene is,

(b)

Interpretation Introduction

Interpretation: The systematic name of isoprene and the structures of the given polymers with configuration about the carbon-carbon double are to be drawn.

Concept introduction: Polymers are very large molecules having high molecular masses, hence are also called as macromolecules. The structure of polymers consists of a very large number of repeating units joined together through covalent bonds in a regular fashion. Isoprene is the repeating unit in natural rubber.

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Chapter 21 Solutions

Chemistry: An Atoms First Approach
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Ch. 21 - What are carbohydrates, and what are the monomers...Ch. 21 - Describe the structural differences between DNA...Ch. 21 - A confused student was doing an isomer problem and...Ch. 21 - For the following formulas, what types of...Ch. 21 - What is wrong with the following names? Give the...Ch. 21 - The following organic compounds cannot exist. Why?...Ch. 21 - If you had a group of hydrocarbons, what...Ch. 21 - Which of the functional groups in Table 21-4 can...Ch. 21 - A polypeptide is also called a polyamide. Nylon is...Ch. 21 - Give an example reaction that would yield the...Ch. 21 - Give an example reaction that would yield the...Ch. 21 - What is polystyrene? 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CH2 = CH ...Ch. 21 - Name each of the following alkenes or alkynes. a....Ch. 21 - Give the structure for each of the following. a....Ch. 21 - Give the structure for each of the following. a....Ch. 21 - Give the structure of each of the following...Ch. 21 - Cumene is the starting material for the industrial...Ch. 21 - Name each of the following. a. b. CH3CH2CH2CCl3 c....Ch. 21 - Name each of the following compounds. a. b. c. d....Ch. 21 - There is only one compound that is named...Ch. 21 - Consider the following four structures. a. Which...Ch. 21 - Which of the compounds in Exercises 25 and 27...Ch. 21 - Which of the compounds in Exercises 26 and 28...Ch. 21 - Draw all the structural isomers of C5H10. Ignore...Ch. 21 - Which of the structural isomers in Exercise 37...Ch. 21 - Draw all the structural and geometrical (cistrans)...Ch. 21 - Draw all the structural and geometrical (cistrans)...Ch. 21 - Draw all structural and geometrical (cistrans)...Ch. 21 - Cistrans isomerism is also possible in molecules...Ch. 21 - Draw the following. a. cis-2-hexene b....Ch. 21 - Name the following compounds. a. b. c.Ch. 21 - If one hydrogen in a hydrocarbon is replaced by a...Ch. 21 - There are three isomers of dichlorobenzene, one of...Ch. 21 - Identify each of the following compounds as a...Ch. 21 - Identify the functional groups present in the...Ch. 21 - Mimosine is a natural product found in large...Ch. 21 - Minoxidil (C9H15N5O) is a compound produced by...Ch. 21 - For each of the following alcohols, give the...Ch. 21 - Draw structural formulas for each of the following...Ch. 21 - Name all the alcohols that have the formula...Ch. 21 - Name all the aldehydes and ketones that have the...Ch. 21 - Name the following compounds. a. b. c.Ch. 21 - Draw the structural formula for each of the...Ch. 21 - Name the following compounds. a. b. c. HCOOHCh. 21 - Draw a structural formula for each of the...Ch. 21 - Which of the following statements is(are) false?...Ch. 21 - Draw the isomer(s) specified. There may be more...Ch. 21 - Complete the following reactions. a. b. c. d.Ch. 21 - Reagents such as HCl, HBr, and HOH (H2O) can add...Ch. 21 - When toluene (C6H5CH3) reacts with chlorine gas in...Ch. 21 - Why is it preferable to produce chloroethane by...Ch. 21 - Using appropriate reactants, alcohols can be...Ch. 21 - Oxidation of an aldehyde yields a carboxylic acid:...Ch. 21 - How would you synthesize each of the following? a....Ch. 21 - What tests could you perform to distinguish...Ch. 21 - How would you synthesize the following esters? a....Ch. 21 - Complete the following reactions. a. CH3CO2H +...Ch. 21 - Kel-F is a polymer with the structure What is the...Ch. 21 - What monomer(s) must be used to produce the...Ch. 21 - Super glue contains methyl cyanoacrylate, which...Ch. 21 - Isoprene is the repeating unit in natural rubber....Ch. 21 - Kevlar, used in bulletproof vests, is made by the...Ch. 21 - The polyester formed from lactic acid, is used for...Ch. 21 - Polyimides are polymers that are tough and stable...Ch. 21 - The Amoco Chemical Company has successfully raced...Ch. 21 - Polystyrene can be made more rigid by...Ch. 21 - Polyesters containing double bonds are often...Ch. 21 - Which of the following polymers would be stronger...Ch. 21 - Poly(lauryl methacrylate) is used as an additive...Ch. 21 - Which of the amino acids in Fig. 21-18 contain the...Ch. 21 - When pure crystalline amino acids are heated,...Ch. 21 - Aspartame, the artificial sweetener marketed under...Ch. 21 - Glutathione, a tripeptide found in virtually all...Ch. 21 - Draw the structures of the two dipeptides that can...Ch. 21 - Draw the structures of the tripeptides glyalaser...Ch. 21 - Write the sequence of all possible tetrapeptides...Ch. 21 - How many different pentapeptides can be formed...Ch. 21 - Give an example of amino acids that could give...Ch. 21 - What types of interactions can occur between the...Ch. 21 - Oxygen is carried from the lungs to tissues by the...Ch. 21 - Over 100 different kinds of mutant hemoglobin...Ch. 21 - Draw cyclic structures for D-ribose and D-mannose.Ch. 21 - Indicate the chiral carbon atoms found in the...Ch. 21 - In addition to using numerical prefixes in the...Ch. 21 - Glucose can occur in three forms: two cyclic forms...Ch. 21 - What are the structural differences between - and...Ch. 21 - Cows can digest cellulose, but humans cant. Why...Ch. 21 - Which of the amino acids in Fig. 21-18 contain...Ch. 21 - Why is glycine not optically active?Ch. 21 - Which of the noncyclic isomers of...Ch. 21 - How many chiral carbon atoms does the following...Ch. 21 - Part of a certain DNA sequence is GGTCTATAC. What...Ch. 21 - The codons (words) in DNA (that specify which...Ch. 21 - Which base will hydrogen-bond with uracil within...Ch. 21 - Tautomers are molecules that differ in the...Ch. 21 - The base sequences in mRNA that code for certain...Ch. 21 - The change of a single base in the DNA sequence...Ch. 21 - Draw the following incorrectly named compounds and...Ch. 21 - In the presence of light, chlorine can substitute...Ch. 21 - Polychlorinated dibenzo-p-dioxins (PCDDs) are...Ch. 21 - Consider the following five compounds. a....Ch. 21 - The two isomers having the formula C2H6O boil at...Ch. 21 - Ignoring ring compounds, which isomer of C2H4O2...Ch. 21 - Explain why methyl alcohol is soluble in water in...Ch. 21 - Is octanoic acid more soluble in 1 M HCl, 1 M...Ch. 21 - Consider the compounds butanoic acid, pentanal,...Ch. 21 - A compound containing only carbon and hydrogen is...Ch. 21 - Three different organic compounds have the formula...Ch. 21 - Consider the following polymer: Is this polymer a...Ch. 21 - Nylon is named according to the number of C atoms...Ch. 21 - The polymer nitrile is a copolymer made from...Ch. 21 - Polyaramid is a term applied to polyamides...Ch. 21 - When acrylic polymers are burned, toxic fumes are...Ch. 21 - Ethylene oxide, is an important industrial...Ch. 21 - Another way of producing highly crosslinked...Ch. 21 - Monosodium glutamate (MSG) is commonly used as a...Ch. 21 - a. 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