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- Which compound has a longer C¬Cl bond?CH3CH2Cl CH CHCl 2at one time, it was used as arefrigerant, an anesthetic, and apropellant for aerosol sprays used as the starting materialfor the synthesis of a plastic thatis used to make bottles, flooring,and clear packaging for foodCalculate the enthalpy of formation of propane from:a. Combustion data (ΔHc = –2217 kJ mol–1; ΔHf (CO2) = –393.4 kJ mol–1, ΔHf (H2O) =–285.2 kJ mol–1);b. Bond enthalpies (C–C 348 kJ mol–1; C–H 413 kJ mol–1; H–H 436 kJ mol–1; ΔHvap forcarbon = –717 kJ mol–1).What is X and Y? X Y OH X: Hg(OAC) 2, H₂O Y: NaBH4 X: BH3 Y: H₂O2 OX: H₂SO4 Y: H₂O All the choices are correct
- Choose a likely identity for X, Y, and Z in these structures. :i: OC O Be Be O B OF OB ON ON 一一 Oc ON OF O Be O B O O O O O0Which of the following compounds is chrally? CH3 CH, CH H. H3C. "CH;CH3 CH, Br H. H Br 1 3. One answer must be chosen: only 2 -11 O 3 -1 1,2 O only a1 O only 3 -1 2 OExample: H R 11' COO- Ca ↓ NH3 L or D?
- Conjugate Acid Name Formula Ammonia NH3 NH, + 1.8 x 10-5 Methylamine CH,NH, CH3NH3 + 4.38 x 104 Ethylamine C,H;NH, C2H;NH3 + 5.6 x 10 Aniline C,H;NH, C,H5NH3+ 3.8 x 10-10 Pyridine C; H;N C,H; NH+ 1.7 x 10-9 a. Which is the stronger base, ClO, or CgH;NH2 ? b. Which is the stronger base, H20 or C; H5N? c. Which is the stronger base, OH or C; H;N? d. Which is the stronger base, C,H;NH, or C,H&NH2 ? Drag and drop your selection from the following list to complete the answer: C; H5N C,H;NH2 C,H; NH2 H20 OH Cl0,"1. LDA, THF 2. CH3I, HMPA 3. H*, H2OWhich is a correct resonance structure for compound A below: H2C=CH-C*H-CH=O (Compound A) 2. H2C=CH-CH=CH-O* 3. H2C=CH-c*H=CH-O I. H2C*-CH=CH-CH=O 4. H2C=C*H=CH-CH=DO O 3 and 4 O 2 and 3 O 1 and 4 01 and 2 MacBook A 20 F3 O00 F1 F2 F4 F5 F6 $ 2 6. Q W E Y S D F G T # 3
- QUESTION 2 The following is a proposed synthetic strategy that uses one starting alcohol in two separate single-step reactions (I and II) to make a pair of diene and dienophile which together undergo a Diels-Alder reaction to give a Diels-Alder product. The Diels-Alder product is subsequently converted to the final ether in a three-step synthesis (III, IV and V). Identify the reagent(s) from Table I required for each of those three sysnthese and place the number (A1, A2 reagent(s) in the given box right next to the corresponding step numbers (I to V) of the synthesis. DO NOT fill in any box with more than one number. (Note: This question is different from the previous synthesis question which allows two numbers for each box). You will be graded based on the number in each box. Do not fill in any single box with more than one number. Do not leave any box blank. B1, B2..., or C1, C2 ...) that represents the (I) diene OH (III, IV and V) Diesl-Alder product (II) dienophile Table I Number…Identify the best reagents to complete the following reaction. CI N.What is the organic product? H Select one: OA III DB. I M II + 2 HI II 2