Question

6. Which experimental evidence would not support the Sn2 mechanism for the reaction between (S)-2-bromooctane and sodium acetylide (aka ethynylsodium)? (A) Only (S)-3-methyl-1-nonyne is observed as a product. (B) The reaction rate decreases tenfold when the concentration of bromooctane is reduced from 1.0 M to 0.1 M (C) The reaction rate doubles when the concentration of sodum acetylide is doubled. (D) The rate of reaction is increased by switching from sodium to potassium acetylide. 7. Which alcohol must undergo a rearrangement upon reaction with catalytic sulfuric acid to form an alkene? OH (A) HOX (B) V (C) VK (0) X 8. Which alkene is the most reactive towards bromine at room temperature? AH (in kcal/mol) for each alkene is provided in parentheses. (A) 2,3-dimethylbut-2-ene (B) ethene (C) 2-methylpropene (D) propene (-25.7) (-32.5) (-27.8) (-29.9) 9. Which compound will react the slowest in an E2 reaction?

Answer 1

lo 12 86 x 10-15 L ISL 2 10-15 So, no. of red blood cells - 2.2L 2 2.5501013 6. (A) only (3)-3-methes! - 1. nanyne is observed as a produet. Enplanedion (8) True & (e) True rate 2 {Alkyl Halede [nucleophile] Inervaring or che creating any of the concentration will increase ardeerease the reaction rate according ty CD) The rate depends on the availibilety of nucleophile since potassium acetyrede is more lonie than sodium analouge. 7.D) gold only D, because athere are testiary, only thes only ies primary 8.47 2,3-dimethy bud-2-ene Explanation highest Alkene with Yourest vane af 8, By Alkone with highet lowest varuswil be hast veactine Answer B.Ethene.

- land by e-H bond breaking - cand brooking end bond breaking more energy, lower Answer will be D