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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
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Organic Chemistry (9th Edition)
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Chemistry: Structure and Properties
- Cubane (C8H8; see structure below) is an organic hydrocarbon containing eight carbon atoms located at the vertices of a cube. While attempts to synthesis this molecule have been successful, it rapidly decomposes at room temperature. Using your knowledge of organic structure, suggest a reasonable explanation for the energetic instability of cubanearrow_forwardWhat is the heat of combustion of ethane, C2H6, in kilojoules per mole of ethane? Properties of C2H6 at 298K ∆Hf °kJ/mol = –84.0 ∆Gf°kJ/mol –32.0 S°J/(mol·K) = 229.2 Δ?∘rxn=___________kJ/mol ethanearrow_forwardPlastics are very well known polymers. Define the term polymer, then describe how the structure of plastic polymers (ex. polyethene) makes them suitable for their purposes. State at least 2 properties of plastic polymers and explain why their structure gives them these properties. (1K, 2A)arrow_forward
- The compound p-methoxybenzonitrile N-oxide, which has the formula CH3OC6H4CNO, reacts with itself to form a dimer—a molecule that consists of two p-methoxybenzonitrile N-oxide units connected to each other (CH3OC6H4CNO)2. The reaction can be represented as A + A → B or 2 A → B where A represents p-methoxybenzonitrile N-oxide and B represents the dimer, (CH3OC6H4CNO)2. For the reaction in carbon tetrachloride at 40 °C with an initial concentration of 0.011 M, these data were obtained: Determine the rate law for the reaction. Determine the rate constant. Determine the order of the reaction with respect to A.arrow_forwardWhat is the N-O bond order in the NO fragment? A) 1 B) 1.5 C) 2arrow_forwardExplain the following observations about two carbon-oxygen bonds in the methane (formate) anion, HCO2-. You may draw a Lewis electron-dot diagram (or diagrams) of methanoate ion as part of your explanations. i. The two carbon-oxygen bonds in the methanoate(formate) anion, HCO2-, have the same length. ii.the length of the carbon-oxygen bonds in the methanoate(formate) anion, HCO2-, is intermediate between the length of the carbon-oxygen bond in methanol and the length of the carbon-oxygen bond in methanal.arrow_forward
- 1. What is the type of hybridization of the oxygen carbon in the organic molecule?*A. Sp2 b. sp c.sp3 d.sp1.5 3. This reaction mechanism is the proposed explanation for the preparation of alkenes from the organic molecule. It is expected that the process involves _________ of the organic molecule and is known as a __________ reaction.*A. Reduction: dehydration b. Substitution: dehydration c. Oxidation: hydration d. Oxidation: rearrangement 3. The regiospecificity of the reaction is based on what principle?*A. Markovnikov’s rule b. Diel’s Alder reaction c. Zaitsev’s rule d. Huckel’s rulearrow_forwardWhy can’t molecules in C2H2O exist? Please explain briefly.arrow_forwardWrite the mechanism for the inner-sphere electron-transfer reaction between [Co(NH3)5SCN]2+ and [Cr(H2O)6]2+ that produces the pentaaqua-N-thiocyanatochromium(III) cation as one of its products.arrow_forward
- In copolymerization of two monomers (M1 and M2), copolymers of different microstructure may form as a result of their relative reactivity ratio (r). Define the reactivity ratio (r) for copolymerization with words and equations. In the radical copolymerization of acrylonitrile 1 and alpha methyl styrene 2 , r1= 0.04 and r2= 0.20 , which of the following best describes the microstructure of the forming copolymer : random, blocky or alternating. Briefly explain itarrow_forwardKsp for Co(OH)2 is 5.92x10^-15arrow_forwardWhat is the hybridisation of P in PCl5?arrow_forward
- Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning