1) Azulene, bicyclo[5.3.0] decapentaene, is an beautiful blue colored hydrocarbon with a large dipole moment (for a hydrocarbon). Draw resonance structures that could explain the large dipole moment. Azulene
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![1) Azulene, bicyclo[5.3.0] decapentaene, is an beautiful blue colored hydrocarbon with a large
dipole moment (for a hydrocarbon). Draw resonance structures that could explain the large dipole
moment.
Azulene](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4f7442e5-ed1a-4154-ba5d-4813abad6cff%2Fd27c8148-9d08-4f58-85bb-ee3e08f37474%2Fuvjcp7_processed.png&w=3840&q=75)
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- From what we know today, what do the two Kekulé structures for benzene really represent? August Kekulé was the first person to propose a viable structure for benzene in 1865. Structures that can be separated at low enough temperatures (near absolute zero). Structures that are in a state of rapid equilibrium. O Structures that are in resonance. Structures that are conjugated trienes (--C=C--C%3DC--C3C--).The unsaturation number or degree of unsaturation (U) can be used to determine the number of rings and multiple bonds in a compound from its molecular formula. Given a structure, you can determine the number of hydrogens without having to count them explicitly. Consider three compounds and their degree of unsaturation. (a) A compound A has the molecular formula C7H13ClN2OC7H13ClN2O. How many rings and/or π bonds does it contain?3. Which of the following molecules are conjugated? For those which are conjugated, write a resonance structure.
- 6. Which of the following does NOT depict resonance structures? (1) CH3-0-CH-CH3 CH3 0 CH CH3 (2) CH3 NO CH3-NO :O: (3) CH3 CH3- (4)ouro- 6)- Draw the structures for the least and most polar molecules (i.e.,isomers) of Bromo-chloro-fl iodoethene (C2BrCIFI). Briefly explain your choice. Structure of least polar: Structure of most polar:An electrostatic potential map of calicene is shown below. a) Both the electrostatic potential map and its significant dipole moment indicate that calicene is an unusually polar hydrocarbon. Which of the dipolar resonance forms, structure A or structure B, better corresponds to the electron distribution in the molecule? Select the single best answer. b) Which one of the following structures should be stabilized by resonance to a greater extent? Select the single best answer.
- Here is the chemical structure of 2-bromobutane: H H. H C-C-H H :Br: H H Decide whether each molecule in the table below is another molecule of 2-bromobutane, a molecule of an isomer of 2-bromobutane, or a molecule of an entirely different compound. molecule relationship to 2-bromobutane CH, (Choose one) H,c=ċ=CH,-Br Explanation Check O 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center I Accessibility P Type here to search 76°F DELL F1 F2 F3 F4 F5 FB F9 F10 F11 F12 PrtScr PAA @ %23 2$ 1 8. 9 Q W R Y. A F G H. K V N4 Alt Ctri Alt Σ B. C1Draw 3 resonance structures of CNO- (connected in that order) and rank them in terms of stability.Draw the skeletal (line-bond) structure of [C6H5SO3]-. Include all lone pairs and charges as appropriate.
- Consider each pair of structures below. Indicate the isomeric relationship between each pair. Your choices are (i) identical structures (ii) constitutional isomers, (iii) conformational isomers, (iv) configurational isomers or (v) resonance structures.Q. 9a) Provide additional resonance structures for the following species. Remember to show lone pairs & formal charges where applicable + [ :N=N-F: +→ [:0-C!-O: → Q. 9b) Draw the Lewis Structure for NCCH2CO2NHCH3, determine the number of sigma bonds & the number of pi bonds present, and indicate the bond angle value around each carbon atom, each nitrogen atom, and each oxygen atom.Some bond dissociation energies in kJ/mol are listed. 1°, 2°, 3° means primary, secondary,tertiary.1° C-H 423 2° C-H 413 3° C-H 4041° C-CN 509 2° C-CN 506 3° C-CN 493For the hypothetical reaction below, do two things:1) Estimate the enthalpy change ΔH° for the reaction. Show your work in the space below.2) Draw a circle around the molecule with the lower enthalpy.