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Q: Which species contain a C4 axis and a ơn plane? XeF4 [ICI,1 SIF4 O (so,²- O SnH4
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- 4. What is the configuration of all double bonds in the following molecule? Forma 1 2 3 4 5 retinol A. 1: Z; 2: Z; 3: Z; 4: Z; 5: Z B. 1: E; 2: Z; 3: Z; 4: Z; 5: Z C. 1: Z; 2: E; 3: E; 4: E; 5: E D. 1: E; 2: E; 3: E; 4: E; 5: E OH1. Which MO of ethylene will it use to accept the metal d-electrons through backbonding? a.σ b.π* c.σ* d.πPresent or Absent?a. CH hyperconjugation b. Lone-pair delocalization
- 2 The dipole moment of 1,2 -dibromobenzene [Structure 1jund 1,3 dibeomubemene [structure 2] is and_respectively. ĮGiven cos 60-05 and cos 120-0 12 a 242 D14D b. 13D, 206 D e. 15D:29D d. 3.5 D35D 3 Choose the correct option from the following a. lodination of acetone is a specific hydrogen ion catalysis in the pesence I b. lodination of acetone is a general acid catalysis in the presence HCI e. Rate -k(HI(1] d. lodination of acetone neither hydrogen ion or general acid catalysis Mean ionic activity coefficient (y of 0.001 M NaSO, is a. 0201 b. 0382 e. 0.679 d. O879 . The rate of reaction increases with temperature due to a. Decrease in activation energy b. Increase in activation onergy e. Increase in collision frequency d. Increase in concentration4. Using a Frost circle, approximate the relative energy level of the a molecular orbitals for following ions and justify the presence or absence of aromaticity in each. а. b.chlorobenzere haz M². 140. and Nitrobenzene M² 3.9 D. Estimate the dipote moment of or the meta- and pera chloronitrobenzene?
- How many atoms of each hybridization state are there (sp,sp2, sp3)?What would be the result after the shown molecule is carried through the 4 step sequence? Show each intermediate and stereochemistry 1. 1eq. MeLi, then H2O workup 2.TsCl/pyr 3.NaOtBu/BuOH 4.OsO4/NaHSO3 And What is the relationship between the isomeric end products from them?d. e. (Z) (H3C)2N. OCH3 CNWhat types of orbitals overlap to provide stability to the tert-butyl carbocation ((Ch3) 3C +) by hyperconjugation: a. 2p atomic orbital of tertiary carbon plus sp2 atomic orbital of tertiary carbo b. 2p atomic orbital of tertiary carbon plus sigma C-H molecular orbital of methyl c.2p atomic orbital of tertiary carbon plus 2s C-h atomic orbital of methyl d. sp2 atomic orbital of tertiary carbon plus sigma C-H molecular orbital of methyl.
- 3. Answer the following questions concerning sulfathiazole, below. :N sulfathiazole a. What is the hybridization of the nitrogen atom in sulfathiazole? b. Assuming that the sulfur atom is sp²-hybridized, how many л-electrons are there in the sulfathiazole ring? c. What reactivity do you predict for sulfathiazole? Explain!The figure below represents the highest accupied molecular orbitals (HOMOS) and the lowest unoccupied molecular orbital (LUMO) for an organic compound with a ketone functional group. The and n orbitals represent the HOMOS and the a* represents the LUMO orbital. л" E I Nonpolar solvent I* Л Polar solvent To The left side HOMOS and LUMO represent the molecule in a nonpolar solvent, and the right side represent the HOMOS and LUMD in a polar solvent, such as water. You can see the change in the energy of the HOMOS and LUMO when the polar solvent interacts with the electrons in the ann orbitals. Study the figure and choose which of the following statements are true or false about why there is a blue shift in the electronic transition. Select all that are True. the energy gap between the n MO and the n* MO is larger in the polar solvent than in the nonpolar solvent, so the photon needed to excite the electron would require more energy when the molecule is in the polar solvent the energy gap…A B C D E 1. NaBH4 2. H3O+ 1. CH3MgBr 2. H3O+ 1. (CH3)2CuLi 2. H3O+ 1. CH3Li 2. H3O+ 1. (CH3CH2)2CuLi 2. H3O+