8. Draw the Lewis structures for two resonance forms of the following moleculesions. Show any formal charges and determine which structure is major, which is minor, or if they are equivalen [HICCO (acylium ion) I UI нссо : нссо н HCONH, (formamide) O о н HCN IOI I O H HCN I I
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![8. Draw the Lewis structures for two resonance forms of the following moleculesions. Show any formal
charges and determine which structure is major, which is minor, or if they are equivalenz
[HICCO] (acylium ion)
IOI
Н
Н
нссо : нссо
Н
Н
0
HCN
HCONH, (formamide)
Н
I
OU
0
HCN
I
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- Please help me with the organic chemistry question below. The solutions are linked, as it is one question with 2 parts: 1. A. Draw a molecular orbital diagram for (2E,4E)hexa-2,4-diene and ethene below. Make sure to label orbitals, HOMO, LUMO, nodes, antibonding/bonding, and fill correctly with electrons. 1. B. Use the orbitals drawn in the previous problem to determine if a cycloadditon would occur between the two compounds mentioned and if so, would it be suprafacial or antarafacial. Be sure to specify which orbitals you are using and use those orbitals to demonstrate your answer.The most stable MO of 1,3,5-hexatriene and the most stable MO of benzene Which compound is more stable? Why?.For anion NO2-, (a) predict the stereochemistry. Justify your prediction with VSEPR theory and by formal charge; (b) indicate the hybridization appropriate to the stereochemistry; (c) describe the bond character of N-O for the resonance structure.
- What is the structure of this molecule using this HNMR? C7H16O2The pentadienyl radical, H2C“CH¬CH“CH¬CH2#, has its unpaired electron delocalized over three carbon atoms.(a) Use resonance forms to show which three carbon atoms bear the unpaired electron.(b) How many MOs are there in the molecular orbital picture of the pentadienyl radical?(c) How many nodes are there in the lowest-energy MO of the pentadienyl system? How many in the highest-energy MO?(d) Draw the MOs of the pentadienyl system in order of increasing energy. (continued)762 CHAPTER 15 Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy(e) Show how many electrons are in each MO for the pentadienyl radical (ground state).(f) Show how your molecular orbital picture agrees with the resonance picture showing delocalization of the unpairedelectron onto three carbon atoms.(g) Remove the highest-energy electron from the pentadienyl radical to give the pentadienyl cation. Which carbon atomsshare the positive charge? Does this picture agree with the resonance picture?(h) Add an…The pentadienyl radical, H2C“CH¬CH“CH¬CH2#, has its unpaired electron delocalized over three carbon atoms.(a) Use resonance forms to show which three carbon atoms bear the unpaired electron.(b) How many MOs are there in the molecular orbital picture of the pentadienyl radical?(c) How many nodes are there in the lowest-energy MO of the pentadienyl system? How many in the highest-energy MO?(d) Draw the MOs of the pentadienyl system in order of increasing energy
- Using example discuss SN1 reactions ?Groups that donate electrons to the ring are formed in a shorter time under mild conditions, increasing the electron density of the ring. Is that true or false?1,4-Pentadiene (CH2=CH-CH2-CH=CH2) is a liquid at room temperature and has a density of 0.66 g/mL and molar mass of 68.12 g/mol. In a laboratory experiment, 3.80 mL of this compound was treated with 4.80 mL of conc. H2SO4 (100% w/w; molar mass 98.08 g/mol). Note that the density of conc. H2SO4 is 1.84 g/mL. The resulting sulfate ester was then treated with 1.20 mL of water (molar mass 18.02 g/mol) affording, after work- up, 2,4-pentanediol (molar mass 104.15 g/mol) as the crude product. The crude product was then purified by simple distillation, which yielded 2.00 g of pure product. What is the theoretical yield of 2,4-pentanediol expressed in grams? Show calculations. What is the percentage yield of pure 2,4-pentanediol?
- 1,4-Pentadiene (CH2=CH-CH2-CH=CH2) is a liquid at room temperature and has a density of 0.66 g/mL and molar mass of 68.12 g/mol. In a laboratory experiment, 3.80 mL of this compound was treated with 4.80 mL of conc. H2SO4 (100% w/w; molar mass 98.08 g/mol). Note that the density of conc. H2SO4 is 1.84 g/mL. The resulting sulfate ester was then treated with 1.20 mL of water (molar mass 18.02 g/mol) affording, after work- up, 2,4-pentanediol (molar mass 104.15 g/mol) as the crude product. The crude product was then purified by simple distillation, which yielded 2.00 g of pure product. a. Provide a balanced chemical equation to show the reaction between 1,4-pentadiene and sulfuric acid. Do not use molecular formulas in the chemical equation except for sulfuric acid. b. What reactant is the limiting reagent in this chemical equation? Show calculations to support your answer.What kind of isomerisation occur in the pairs a-f?The following molecule, the silicon analog of formaldehyde, has never been successfully prepared. H2SiO or H2Si=O The following reaction was attempted by researchers in order to synthesize this unusual compound: H2Si=S + P4O10 → H2Si=O + P4O9S None of the desired compound (H2Si=O) was obtained. Instead, the following molecule was obtained: (H2SiO)2 a molecule in which the O and Si form an …Si-O-Si-O… square. Further research indicated that although H2Si=O formed, it immediately formed (H2SiO)2 and released a substantial amount of energy according to the reaction: 2 H2Si=O → (H2SiO)2 + heat Based on the information above and your knowledge, what can be concluded about the relative strength of the Si-O and Si=O bonds? Question 24 options: A) An Si=O bond is stronger than two Si-O bonds. B) An Si=O bond is weaker than two Si-O bonds. C) An Si-O bond has the same strength as an Si=O.…