9th Edition

ISBN: 9780321971371

Author: Leroy G. Wade, Jan W. Simek

Publisher: PEARSON

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Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.

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Textbook Question

Chapter 7.6, Problem 7.10P

Teflon-coated frying pans routinely endure temperatures that would cause polyethylene or polypropylene to oxidize and decompose. Decomposition of polyethylene is initiated by free-radical abstraction of a hydrogen atom by O₂ Bond-dissociation energies of C—H bonds are about 400 kJ/mol, and C—F bonds are aboul 460 kJ/mol. The BDE of the H—OO bond is about 192 kJ/mol, and the F—OO bond is about 63 kJ/mol. Show why Teflon (Figure 7-5) is much more resistant to oxidation than polyethylene is.

Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.

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Chapter 7.5B, Problem 7.9P

Chapter 7.7B, Problem 7.11P

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Chapter 7 Solutions

Organic Chemistry (9th Edition)

Ch. 7.3A - Prob. 7.1P Ch. 7.3A - Prob. 7.2P Ch. 7.3B - Draw five more compounds of formula C4H6NOC1.Ch. 7.3B - For each of the following molecular formulas,...Ch. 7.4 - Give the systematic (IUPAC) names of the following...Ch. 7.5B - The following names are all incorrect. Draw the...Ch. 7.5B - Prob. 7.8P Ch. 7.5B - a. How many stereogcmc double bonds are in...Ch. 7.6 - Teflon-coated frying pans routinely endure...Ch. 7.7B - Prob. 7.11P

Ch. 7.8B - Use the data in Table7-2 to predict the energy...Ch. 7.8C - Prob. 7.13P Ch. 7.8E - Explain why each of the following alkenes is...Ch. 7.8F - Prob. 7.15P Ch. 7.10 - Prob. 7.16P Ch. 7.10A - SN1 substitution and E1 elimination frequently...Ch. 7.10C - Prob. 7.18P Ch. 7.10C - Prob. 7.19P Ch. 7.10C - Prob. 7.20P Ch. 7.11 - Prob. 7.21P Ch. 7.11 - Prob. 7.22P Ch. 7.12 - Prob. 7.23P Ch. 7.12 - Prob. 7.24P Ch. 7.13 - Prob. 7.25P Ch. 7.14B - Prob. 7.26P Ch. 7.14B - Make models of the blowing compounds, and predict...Ch. 7.15 - Prob. 7.28P Ch. 7.15 - Prob. 7.29P Ch. 7.15 - Prob. 7.30P Ch. 7.15 - Prob. 7.31P Ch. 7.16 - Predict the major and minor elimination products...Ch. 7.17B - Predict the products and mechanisms of the...Ch. 7.18 - Propose mechanisms for the following reactions.Ch. 7.18 - Prob. 7.35P Ch. 7.19B - The dehydrogenation of butane to trans-but-2-ene...Ch. 7.19B - Prob. 7.37P Ch. 7.19B - Prob. 7.38P Ch. 7.19B - Prob. 7.39P Ch. 7 - Prob. 7.40SP Ch. 7 - Prob. 7.41SP Ch. 7 - Prob. 7.42SP Ch. 7 - Prob. 7.43SP Ch. 7 - Prob. 7.44SP Ch. 7 - Prob. 7.45SP Ch. 7 - Prob. 7.46SP Ch. 7 - The energy difference between cis- and...Ch. 7 - Prob. 7.48SP Ch. 7 - Prob. 7.49SP Ch. 7 - Prob. 7.50SP Ch. 7 - What halides would undergo E2 dehydrohalogenation...Ch. 7 - Prob. 7.52SP Ch. 7 - Prob. 7.53SP Ch. 7 - Write a balanced equation for each reaction,...Ch. 7 - Prob. 7.55SP Ch. 7 - Using cyclohexane as your starting material, show...Ch. 7 - Show how you would prepare cyclopentene from each...Ch. 7 - Prob. 7.58SP Ch. 7 - E1 eliminations of alkyl halides are rarely useful...Ch. 7 - Prob. 7.60SP Ch. 7 - Propose mechanisms for the following reactions....Ch. 7 - Prob. 7.62SP Ch. 7 - Prob. 7.63SP Ch. 7 - Prob. 7.64SP Ch. 7 - Prob. 7.65SP Ch. 7 - Prob. 7.66SP Ch. 7 - Prob. 7.67SP Ch. 7 - Prob. 7.68SP Ch. 7 - Prob. 7.69SP Ch. 7 - Explain the dramatic difference in rotational...Ch. 7 - One of the following dichloronorbornanes undergoes...Ch. 7 - A graduate student wanted to make...Ch. 7 - Prob. 7.73SP Ch. 7 - Prob. 7.74SP Ch. 7 - Prob. 7.75SP Ch. 7 - Prob. 7.76SP

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