ORGANIC CHEMISTRY-EBOOK>I<
9th Edition
ISBN: 9781305084414
Author: McMurry
Publisher: INTER CENG
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Textbook Question
Chapter 2.SE, Problem 39AP
1, 3-Cyclobutadiene is a rectangular molecule with two shorter double bonds and two longer single bonds. Why do the following structures not represent resonance forms?
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Chapter 2 Solutions
ORGANIC CHEMISTRY-EBOOK>I<
Ch. 2.1 - Prob. 1PCh. 2.1 - Prob. 2PCh. 2.1 - Use the electronegativity values shown in Figure...Ch. 2.1 - Look at the following electrostatic potential map...Ch. 2.2 - Ethylene glycol, HOCH2CH2OH, may look nonpolar...Ch. 2.2 - Make three-dimensional drawings of the following...Ch. 2.3 - Calculate formal charges for the nonhydrogen atoms...Ch. 2.3 - Organic phosphate groups occur commonly in...Ch. 2.6 - Which of the following pairs of structures...Ch. 2.6 - Draw the indicated number of resonance forms for...
Ch. 2.7 - Nitric acid (HNO3) reacts with ammonia (NH3) to...Ch. 2.8 - Prob. 12PCh. 2.8 - Amide ion, H2N-, is a much stronger base than...Ch. 2.9 - Prob. 14PCh. 2.9 - Prob. 15PCh. 2.9 - Prob. 16PCh. 2.11 - Using curved arrows, show how the species in part...Ch. 2.11 - Prob. 18PCh. 2.12 - Of the two vitamins A and C, one is hydrophilic...Ch. 2.SE - Prob. 20VCCh. 2.SE - The following model is a representation of...Ch. 2.SE - cis-l, 2-Dichloroethylene and trans-1,...Ch. 2.SE - The following molecular models are representations...Ch. 2.SE - Predict the product(s) of the acid/base reactions...Ch. 2.SE - Use curved arrows to draw the protonated form of...Ch. 2.SE - Prob. 26MPCh. 2.SE - Double bonds can also act like Lewis bases,...Ch. 2.SE - Prob. 28APCh. 2.SE - Use the electronegativity table given in Figure...Ch. 2.SE - Which of the following molecules has a dipole...Ch. 2.SE - Prob. 31APCh. 2.SE - Phosgene, C12C=O, has a smaller dipole moment than...Ch. 2.SE - Prob. 33APCh. 2.SE - Methanethiol, CH3SH, has a substantial dipole...Ch. 2.SE - Calculate the formal charges on the atoms shown in...Ch. 2.SE - Assign formal charges to the atoms in each of the...Ch. 2.SE - Which of the following pairs of structures...Ch. 2.SE - Prob. 38APCh. 2.SE - 1, 3-Cyclobutadiene is a rectangular molecule with...Ch. 2.SE - Alcohols can act either as weak acids or as weak...Ch. 2.SE - The O-H hydrogen in acetic acid is more acidic...Ch. 2.SE - Draw electron-dot structures for the following...Ch. 2.SE - Write the products of the following acid-base...Ch. 2.SE - Rank the following substances in order of...Ch. 2.SE - Which, if any, of the substances in Problem 2-44...Ch. 2.SE - The ammonium ion (NH4+, pKa = 9.25) has a lower...Ch. 2.SE - Prob. 47APCh. 2.SE - Prob. 48APCh. 2.SE - Calculate Ka values from the following pka’s:...Ch. 2.SE - Calculate pKa values from the following Ka’s:...Ch. 2.SE - What is the pH of a 0.050 M solution of formic...Ch. 2.SE - Prob. 52APCh. 2.SE - Maleic acid has a dipole moment, but the closely...Ch. 2.SE - Assume that you have two unlabeled bottles, one of...Ch. 2.SE - Identify the acids and bases in the following...Ch. 2.SE - Which of the following pairs represent resonance...Ch. 2.SE - Draw as many resonance structures as you can for...Ch. 2.SE - Carbocations, which contain a trivalent,...Ch. 2.SE - We’ll see in the next chapter that organic...Ch. 2.SE - The azide functional group, which occurs in...Ch. 2.SE - Phenol, C6H5OH, is a stronger acid than methanol,...Ch. 2.SE - Thiamin diphosphate (TPP), a derivative of vitamin...Ch. 2.SE - Determine if each compound or ion below has a...Ch. 2.SE - Prob. 64APCh. 2.SE - Prob. 65APCh. 2.SE - Draw the conjugate base for each compound below...Ch. 2.SE - 1, 1, 1-Trichloroethanol is an acid more than 1000...
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- Compounds X and Y both have the formula C7H₁4. Both X and Y react with one molar equivalent of hydrogen in the presence of a palladium catalyst to form 2-methylhexane. The heat of hydrogenation of X is greater than that of Y. Both X and Y react with HCI to give the same single C7H15Cl compound as the major product. What is the structure of X? • In cases where there is more than one answer, just draw one. 23 ▾ Sn [F ChemDoodleⓇ 146arrow_forwardCompounds X and Y both have the formula C7H14. Both X and Y react with one molar equivalent of hydrogen in the presence of a palladium catalyst to form 2-methylhexane. The heat of hydrogenation of X is greater than that of Y. Both X and Y react with HCI to give the same single C₂H₁5Cl compound as the major product. What is the structure of X? • In cases where there is more than one answer, just draw one. 7 0▾ ChemDoodleⓇ 146arrow_forwardThe heat of combustion of decahydronaphthalene (C10H18) is -6286 kJ/mol. The heat of combustion of naphthalene 1C10H82 is -5157 kJ/mol. (In both cases CO2(g) and H2O(l) are the products). Calculate the heat of hydrogenation and the resonance energy of naphthalene.arrow_forward
- Which of the following structural pairs represents contributors to a resonance hybrid? Explain – please show your work for clear understanding.arrow_forwardWhich bond is non-polar in the molecule of trans-1,4-dichlorobutene-2?arrow_forwardn of the following molecules could be considered aromatic? Assume all of the compounds are planar. T: Are these proper Lewis structures? ZI NH₂ N HBarrow_forward
- 7. Draw curved arrows indicating the movements of electrons between the following pair of resonance structures. Name the pattern of resonance shown. What is the hybridization of the carbon atoms? 8. Draw the remaining three resonance structures for the molecule in problem 7 above. 9. There are several possible forms of a trisubstituted cyclohexane with the formula C10H200. I have drawn four of them. From these, which one do you think is most commonly naturally occurring, and why? Which is least commonly occurring and why? HO HO" HO HOarrow_forwardEthanol, C2H5OH, and propane, C3H8, have approximately the same molar mass, yet ethanol has a much higher boiling point. Briefly explain why. Ethanol, C2H5OH, and dimethyl ether, CH3OCH3, have the same molar mass, yet ethanol has a much higher boiling point. Briefly explain why. Write an equation to show the reaction between ethanol, C2H5OH and methyllithium, CH3Li. Draw all non-bonding electrons and show electron flow with curved arrows. 37. Write an equation that shows the reaction between acetic acid (CH3COOH) and triethylamine (CH3CH2)3N. Draw all non-bonding lone electron pairs and show the electron flow with curved arrows.arrow_forwardExplain why triphenylene resembles benzene in that it does not undergo addition reactions with Br2, but phenanthrene reacts with Br2 to yield the addition product drawn. (Hint: Draw resonance structures for both triphenylene and phenanthrene, and use them to determine how delocalized each π bond is.)arrow_forward
- The heat of combustion of decahydronaphthalene(C10H18) is -6286 kJ/mol. The heat of combustion ofnaphthalene (C10H8) is -5157 kJ/mol. (In both casesCO2(g) and H2O(l) are the products.) Calculate the heat of hydrogenationand the resonance energy of naphthalene.arrow_forwardDraw 1,2,3,4,5,6-hexamethylcyclohexane with the methyl group (a) in equatorial positions.arrow_forwardSpecify whether the two structures are resonance contributors to the same resonance hybrid. Be sure to explain your reasoning. If yes, be sure to specify which is preferred and why. H3C-CH=CH-NH2 H,C-CH-CH=NH2arrow_forward
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