1) Choose the correct answer: [8 Marks) a. Which Sx2 reaction would you expect to be faster and why? 1. H,C-C=c+ H,C-1 HC-C=CCH, H,C-CECH pka - 25 VS ii. H,C- H,C-1 CH HC-0 H,C-OH pka - 15-16 Reason: b. TWO of the following nucleophiles would be more likely to participate in Sx2 reaction? Circle them. ii. CH3CH S iv. EEN . c. Which Sw/ reaction would you expect to be faster and why? i. -Br Et-OH Br Eto ii. +-a Et-OH -OET Reason: d. Which nucleophile would be more reactive in the solvent given? i. @ VS in ii. VS in Ho