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For this step of the synthesis, draw the arrow pushing mechanism for the following reaction. Include stereochemistry. Removal of the trimethylsilyl group.
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- (b) A motor car tyre contained a fixed mass of air at 27 °C. Its pressure was 220 k Nm-4 abe atmospheric pressure. After a 60-minute drive, the air pressure rose to 250 k Nm-2 above atmospheric pressure. What was the new temperature of the air in the tyre, in degrees Celsius, if the volume of air remained constant? Note: (Atmospheric pressure = 100 k N m-2)Calculate the mean square displacement, (x²), of the H-Cl bond distance from its equilibrium positionWrite the formula for hypoiodous acid. formula: || SPECIAL ΔΣΩ λμπ x" Xo x (s) (1) (aq) (g) () [] CLRQ2: Consider a molecular interaction denoted as X-HY, where "-" signifies a covalent bond and "..." indicates hydrogen bonding. The system can be described as a superposition of three structures: |X-HY-)= V1+s 1 0 (s) |X:, H+,: Y-) = (1); |X:-, H-Y) = 0 0 0 (s), 1 where 0 < s << 1. The first (last) structure represents a pure covalent bond between the atoms X (Y) and H, with Y (X) carrying a negative charge. The middle structure depicts an ionic configuration where X and Y bear negative charges, while H carries a positive charge. In this structure, there is no covalent bond. The Hamiltonian for this molecular system reads 0 0 2€ 2€ 0 H=(0 -E မဝါဝ I a) Determine the expected energies for the covalent structures IX-H, Y) and (X:-, H-Y). b) Calculate the expected energy for the ionic structure IX: H: Y) and compare its stability with the covalent structures.23) Br H2O O°C 24) BY KOH Too°c 100°C' Br. 25) KOH(a) (c) HO OH 1. BH3 2. H₂O₂, NaOH 3. PCC 4. CH3MgBr 5. H3O+ workup Na₂Cr₂O7 H₂SO4, H₂O10:31 „0. O O ? 86%i E AIATS For Two Year Medic... A 87 /180 (02:53 hr min Mark for Review The correct order of ease of dehydration of the following compounds is CH, (а) CН,-С - Он CH3 CH3 (b) CH, - CH - OH (c) CH3CH2OH a > b >c b>c> a a >c > b c > b > a Clear Response III05) Determine Assume the soil coefficient (log Koc). factor teem in your molecular structure is given as по Collection The followe : Calculations. Bekow CI Given, log Koc = ос NH2 0.53' x + 0.62 + Σ n; Pj, Where X is the first order molecular connectivity n; is the number of groups of type 'j molecule and Pj Is Collection factor in Index the for each group. (6 marks) [Last question Numerical: The heat of dissociation per mole of gaseous water at 18 °C and 1 atm is 241750 J/mol. Calculate its value at 68 °C. H,0(g) → H2(9) + 0-(9) Data given are Cp(H20) = 33.56 JK-ªmol¬1 Cp(H2) = 28.83 JK-!mol-1 С- (0) %3D 29.12 Jк--mol-1 %3Db) Determine the standard enthalpy change and std. Gibbs free energy change of reaction at 400 k for the reaction СO(g) +2H2(g) — CHОН (g) At 298.15 K, AH.co (0)= -26.41 kcal/mol, AH AG.co (9)= -32.8079 kcal/mol, AG cH,oh(9)= -38.69 kcal/mol, °.CH20H(9)= -48.08 kcal/mol, The standard heat capacity of various components is given by, CO = a + bT + cT² + dT³, where C, is in cal/mol-K and T is in K b x10² с х105 d x10° Соmponent CH3OH а 4.55 2.186 -0.291 -1.92 CO 6.726 0.04 0.1283 -0.5307 H2 6.952 -0.0457 0.09563 -0.2079Raney NI M Ph CH, CH PPh,- L HO. H;SO4. o 90 °C O O DC LOCH3 250 °C HBr }) m-CPBA MgBrSEE MORE QUESTIONS