Answer Happy

please answer 6-11
6. (4 points) Which of the following statements best explains the pka difference between cyclohexanol and phenol? a. cyclohexanol has a lower pka than phenol because sp³ oxygens anions are more stable than sp² oxygen anions. b. phenol has a higher pKa than cyclohexanol because the conjugate base is resonance stabilized c. cyclohexanol has a lower pka than phenol because pi-bonds destabilize the conjugate base of phenol d. phenol has a lower pka than cyclohexanol sp² oxygens anions are more stable than sp¹ oxygen anions. 7. (4 points) How are the following compounds related? CH₂ CH₂ H₂ CH₂ H CH₂ a. enantiomers b. diastereomers c. identical. d. constitutional isomers 8. (4 points) Which reagents are needed to convert 1-octyne to 2-octanone? a. ozone followed by dimethyl sulfide b. hydrogen gas with a transition metal catalyst c. BH, in THF followed by NaOH, peroxide, and water. d. HgSO4, H₂SO4, and water 9. (4 points) How many stereoisomers are possible for 1-bromo-6-methyl-4-heptene-2-ol? a. 5 b. 3 c. 2 d. 4 10. (4 points) Which of the following methyl group will have the furthest upfield chemical shift? a. dimethyl ether b. dimethyl sulfide c. trimethyl amine d. tetramethyl silane
11. (10 points) Draw the mechanism that explains the product of the following reaction: Br₂ H₂O HO Me Bri + ent.