Essential Organic Chemistry (3rd Edition)
3rd Edition
ISBN: 9780321937711
Author: Paula Yurkanis Bruice
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 15, Problem 26P
Interpretation Introduction
Interpretation:
The products formed in the two flasks should be explained after the given experiment.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
What is the fraction of monomers (p) that have been used in a stepwise polymerisation reaction if the reaction solution started with a monomer concentration of 1.58 mol L-1 and now has a concentration of 0.231 mol L-1?
The uestion number 3 only tnx
In a free - radical polymerization of styrene in solution at 600C, carbon tetrabromide was used as a
chain transfer agent. The initial concentrations of styrene and CBr4 were 1 mol/L and 0.01 mol/L,
respectively. In 1 h, these concentrations dropped to 0.85 mol/L and 0.007 mol/L, respectively. What
is the chain transfer constant CS for styrene/CBr4? (Neglect chain transfer to monomer, initiator, and
solvent.)
Chapter 15 Solutions
Essential Organic Chemistry (3rd Edition)
Ch. 15.2 - Prob. 1PCh. 15.2 - Prob. 2PCh. 15.2 - Prob. 3PCh. 15.2 - Prob. 4PCh. 15.2 - List the following groups of monomers in order...Ch. 15.2 - List the following groups of monomers in order...Ch. 15.2 - Prob. 7PCh. 15.2 - Why does methyl methacrylate not undergo cationic...Ch. 15.2 - Which monomer and which type of initiator would...Ch. 15.2 - Prob. 10P
Ch. 15.2 - Prob. 11PCh. 15.5 - Draw a short segment of gutta-percha.Ch. 15.5 - Prob. 13PCh. 15.6 - Prob. 14PCh. 15.8 - Prob. 15PCh. 15.8 - Prob. 16PCh. 15.8 - Prob. 17PCh. 15.8 - a. Propose a mechanism for the formation of the...Ch. 15.8 - Propose a mechanism for the formation of Melmac.Ch. 15.8 - Explain why, when a small amount of glycerol is...Ch. 15.10 - Prob. 21PCh. 15 - Draw short segments of the polymers obtained from...Ch. 15 - Prob. 23PCh. 15 - Draw the structure of the monomer or monomers used...Ch. 15 - Draw short segments of the polymers obtained from...Ch. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - Prob. 28PCh. 15 - A particularly strong and rigid polyester used for...Ch. 15 - Prob. 30PCh. 15 - Prob. 31PCh. 15 - Prob. 32PCh. 15 - Prob. 33PCh. 15 - Prob. 34PCh. 15 - Prob. 35PCh. 15 - Delrin (polyoxymethylene) is a tough...
Knowledge Booster
Similar questions
- Research in the “unzipping” of poly(vinyl chloride) indicates that certain defects in the polymer contribute to the rate of unzipping. These defects are arrangements of atoms that are different from the arrangements in the repeating unit shown in the condensed formula. Researchers have found that defects involving allylic chlorides and tertiary chlorides, specifically, promote the reaction. Review the mechanism for the unzipping and explain this observation.arrow_forwardA characteristic of the stoichiometry of condensation (step-growth) polymerization reactions is that small molecules, like H2O, HCl or others, are released as reaction by-products. In a commercial polymerization reactor, what might be some process implications of the release of small molecules like H2O or HCl?arrow_forwardPolymers prepared by condensation polymerization are usually of high molecular weights, but the student has been finding difficulties to produce a high molecular weight polymer using this technique in the lab. Give two reasons why this might be the case.arrow_forward
- Methyl methacrylate (or methyl 2-methylpropenoate in proper IUPAC nomenclature) is the starting material for the syntheses of poly(methyl methacrylate), also known as PMMA. The monomer is expressed as CH2=CH- COOCH3. Calculate the molecular weight of PMMA for which the degree of polymerization, n, is 5112. Express your answer in kilograms per mole. 0.10012 0.10012 Calculate the approximate stretched-out chain length of one of the chains, taking the C-C bond length to be 1.54 angstroms and ignoring the large side group's effect. Express your answer in microns. 45 45arrow_forwardShow the differences between the chain-growth and step-growth mechanisms of polymerization.arrow_forward8. When an equilibrium step-growth polymerization is 99% complete, what fraction of the reaction mixture is still monomer (a) on mole basis and (b) on weight basis ?arrow_forward
- Use mechanisms to show how monomers polymerize under acidic, basic, orfree-radical conditions. For chain-growth polymerization, determine whether the reactive end is more stable as a cation (acidic conditions), anion (basic conditions), or free radical (radical initiator). For step-growth polymerization, consider the mechanism of the condensation.arrow_forwardIn an end-group analysis of a polyester sample prepared from 4-hydroxybenzoic acid, the acid number was found to be 12.4 when it was titrated with standard potassium hydroxide, KOH. Determine the average degree of polymerization of this polyester sample. Given that the molecular weight of KOH= 56.1 g/mol and the molecular weight of the repeating unit of this polyester is 120 g/mol. Determine the osmotic pressure in milliliters of water at 25 °C for a 0.8 % (w/v) aqueous polymer sample solution at 5000 g/mol and 100,000 g/mol respectively. Ignore the nonideality of the solution. Comment on the effectivity. of this measurement technique. [Given that, gas constant, R = 8.3145 J mol¹¹ K-¹]arrow_forwardStyrene can autoinitiate free radical polymerization and form polystyrene in the absence of an initiator. At temperatures >100 °C, radicals form due to homolysis of the T bond in the vinyl group. In the study of this reaction, researchers have found 1,2-diphenylcyclobutane in samples of heated styrene. The following mechanism for the formation of 1,2-diphenylcyclobutane has been proposed: Step 1: Homolysis of the vinyl T bond in a styrene molecule Step 2: Homolysis of the vinyl T bond in a second styrene molecule Step 3: Tail-to-tail addition of the radicals from Steps 1 and 2 Step 4: Radical coupling of the diradical formed in Step 3 (a) Use curved arrow notation to show the steps in this mechanism. (b) Are the steps in this mechanism consistent with those for free radical polymerization? (c) Why is the use of an initiator such as benzoyl peroxide more efficient in the synthesis of polystyrene than autoinitiated polymerization?arrow_forward
- What requirement should be provided to achieve high yield and high molecular weight of polymer by condensation reaction?arrow_forwardProvide the mechanism for the step-growth polymerization of citric acid and ethylene glycol to form poly (ethylene glycol)-citrate. Show all steps.arrow_forwardd) Provide the structure for the chain end group X that would result from chain termination through the following termination mechanism: • Disproportionation: Structure of X = • Chain end radical recombination: Structure of X = • Hydrogen abstraction: Structure of X = d) Early in the polymerization at lower conversion of the MVK monomer, the polymer chains formed are primarily linear. However, close to the end of the reaction, as most of the monomer is consumed, branched polymers may start to appear. Propose a possible rationale for the formation of branched polymer structures (hint: consider the types of termination reactions that may compete with polymerization when only little monomer is still present). 32 linear vs. branchedarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning
Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning
Organic Chemistry
Chemistry
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning