Question

4. a) In the following substitution reaction, circle and clearly label the individual atoms that perform the following roles: Nucleophile, Electrophile, and Leaving Group teens . فرا | Br. Ethanol * مرا OCH CH3. HBO د . b) What effect on the overall rate of this reaction would result if the starting concentrations of both 2 bromo-2- methylbutane and ethanol were halved? c) What general effect on the overall rate of this reaction would result if the solvent were changed from acetone to 2.propanol? d) Draw an Energy versus Reaction Coordinate diagram for the reaction shown in 4a (and below). Show the structure of the transition state.

Answer 1

hearing grup La + elkanol Locher + HBK och can 9 + Elkanol - Elahophile CH-W-OH Nucleophile Rate of the reaction = K [a-bromo -2-meinys butene] Centerol] in poka apnotic solvent, acetone. the date of deaction as second order New, Pate of the reaction = K[y2 cameltyp-Butane)] 4 Elhand] te (Original hate of reaction) .: When the concentrations of bola &-bromo-a-merty butine and eth and were halved, date of reaction decreases by 4 units @ on polad protic solvents isopoopanol (a-propanol) Rate of reaction tollows biust order Kinetic Rate = k{2-Bromo -2-meltys butane] Rate of deaction decreases by 2-unity - Transition state - - ... Energy Reactants shach . products → Reaction co-ordinate